diff --git a/elixir/beer-song/README.md b/elixir/beer-song/README.md
new file mode 100644
index 0000000..914f4e2
--- /dev/null
+++ b/elixir/beer-song/README.md
@@ -0,0 +1,362 @@
+# Beer Song
+
+Recite the lyrics to that beloved classic, that field-trip favorite: 99 Bottles of Beer on the Wall.
+
+Note that not all verses are identical.
+
+```text
+99 bottles of beer on the wall, 99 bottles of beer.
+Take one down and pass it around, 98 bottles of beer on the wall.
+
+98 bottles of beer on the wall, 98 bottles of beer.
+Take one down and pass it around, 97 bottles of beer on the wall.
+
+97 bottles of beer on the wall, 97 bottles of beer.
+Take one down and pass it around, 96 bottles of beer on the wall.
+
+96 bottles of beer on the wall, 96 bottles of beer.
+Take one down and pass it around, 95 bottles of beer on the wall.
+
+95 bottles of beer on the wall, 95 bottles of beer.
+Take one down and pass it around, 94 bottles of beer on the wall.
+
+94 bottles of beer on the wall, 94 bottles of beer.
+Take one down and pass it around, 93 bottles of beer on the wall.
+
+93 bottles of beer on the wall, 93 bottles of beer.
+Take one down and pass it around, 92 bottles of beer on the wall.
+
+92 bottles of beer on the wall, 92 bottles of beer.
+Take one down and pass it around, 91 bottles of beer on the wall.
+
+91 bottles of beer on the wall, 91 bottles of beer.
+Take one down and pass it around, 90 bottles of beer on the wall.
+
+90 bottles of beer on the wall, 90 bottles of beer.
+Take one down and pass it around, 89 bottles of beer on the wall.
+
+89 bottles of beer on the wall, 89 bottles of beer.
+Take one down and pass it around, 88 bottles of beer on the wall.
+
+88 bottles of beer on the wall, 88 bottles of beer.
+Take one down and pass it around, 87 bottles of beer on the wall.
+
+87 bottles of beer on the wall, 87 bottles of beer.
+Take one down and pass it around, 86 bottles of beer on the wall.
+
+86 bottles of beer on the wall, 86 bottles of beer.
+Take one down and pass it around, 85 bottles of beer on the wall.
+
+85 bottles of beer on the wall, 85 bottles of beer.
+Take one down and pass it around, 84 bottles of beer on the wall.
+
+84 bottles of beer on the wall, 84 bottles of beer.
+Take one down and pass it around, 83 bottles of beer on the wall.
+
+83 bottles of beer on the wall, 83 bottles of beer.
+Take one down and pass it around, 82 bottles of beer on the wall.
+
+82 bottles of beer on the wall, 82 bottles of beer.
+Take one down and pass it around, 81 bottles of beer on the wall.
+
+81 bottles of beer on the wall, 81 bottles of beer.
+Take one down and pass it around, 80 bottles of beer on the wall.
+
+80 bottles of beer on the wall, 80 bottles of beer.
+Take one down and pass it around, 79 bottles of beer on the wall.
+
+79 bottles of beer on the wall, 79 bottles of beer.
+Take one down and pass it around, 78 bottles of beer on the wall.
+
+78 bottles of beer on the wall, 78 bottles of beer.
+Take one down and pass it around, 77 bottles of beer on the wall.
+
+77 bottles of beer on the wall, 77 bottles of beer.
+Take one down and pass it around, 76 bottles of beer on the wall.
+
+76 bottles of beer on the wall, 76 bottles of beer.
+Take one down and pass it around, 75 bottles of beer on the wall.
+
+75 bottles of beer on the wall, 75 bottles of beer.
+Take one down and pass it around, 74 bottles of beer on the wall.
+
+74 bottles of beer on the wall, 74 bottles of beer.
+Take one down and pass it around, 73 bottles of beer on the wall.
+
+73 bottles of beer on the wall, 73 bottles of beer.
+Take one down and pass it around, 72 bottles of beer on the wall.
+
+72 bottles of beer on the wall, 72 bottles of beer.
+Take one down and pass it around, 71 bottles of beer on the wall.
+
+71 bottles of beer on the wall, 71 bottles of beer.
+Take one down and pass it around, 70 bottles of beer on the wall.
+
+70 bottles of beer on the wall, 70 bottles of beer.
+Take one down and pass it around, 69 bottles of beer on the wall.
+
+69 bottles of beer on the wall, 69 bottles of beer.
+Take one down and pass it around, 68 bottles of beer on the wall.
+
+68 bottles of beer on the wall, 68 bottles of beer.
+Take one down and pass it around, 67 bottles of beer on the wall.
+
+67 bottles of beer on the wall, 67 bottles of beer.
+Take one down and pass it around, 66 bottles of beer on the wall.
+
+66 bottles of beer on the wall, 66 bottles of beer.
+Take one down and pass it around, 65 bottles of beer on the wall.
+
+65 bottles of beer on the wall, 65 bottles of beer.
+Take one down and pass it around, 64 bottles of beer on the wall.
+
+64 bottles of beer on the wall, 64 bottles of beer.
+Take one down and pass it around, 63 bottles of beer on the wall.
+
+63 bottles of beer on the wall, 63 bottles of beer.
+Take one down and pass it around, 62 bottles of beer on the wall.
+
+62 bottles of beer on the wall, 62 bottles of beer.
+Take one down and pass it around, 61 bottles of beer on the wall.
+
+61 bottles of beer on the wall, 61 bottles of beer.
+Take one down and pass it around, 60 bottles of beer on the wall.
+
+60 bottles of beer on the wall, 60 bottles of beer.
+Take one down and pass it around, 59 bottles of beer on the wall.
+
+59 bottles of beer on the wall, 59 bottles of beer.
+Take one down and pass it around, 58 bottles of beer on the wall.
+
+58 bottles of beer on the wall, 58 bottles of beer.
+Take one down and pass it around, 57 bottles of beer on the wall.
+
+57 bottles of beer on the wall, 57 bottles of beer.
+Take one down and pass it around, 56 bottles of beer on the wall.
+
+56 bottles of beer on the wall, 56 bottles of beer.
+Take one down and pass it around, 55 bottles of beer on the wall.
+
+55 bottles of beer on the wall, 55 bottles of beer.
+Take one down and pass it around, 54 bottles of beer on the wall.
+
+54 bottles of beer on the wall, 54 bottles of beer.
+Take one down and pass it around, 53 bottles of beer on the wall.
+
+53 bottles of beer on the wall, 53 bottles of beer.
+Take one down and pass it around, 52 bottles of beer on the wall.
+
+52 bottles of beer on the wall, 52 bottles of beer.
+Take one down and pass it around, 51 bottles of beer on the wall.
+
+51 bottles of beer on the wall, 51 bottles of beer.
+Take one down and pass it around, 50 bottles of beer on the wall.
+
+50 bottles of beer on the wall, 50 bottles of beer.
+Take one down and pass it around, 49 bottles of beer on the wall.
+
+49 bottles of beer on the wall, 49 bottles of beer.
+Take one down and pass it around, 48 bottles of beer on the wall.
+
+48 bottles of beer on the wall, 48 bottles of beer.
+Take one down and pass it around, 47 bottles of beer on the wall.
+
+47 bottles of beer on the wall, 47 bottles of beer.
+Take one down and pass it around, 46 bottles of beer on the wall.
+
+46 bottles of beer on the wall, 46 bottles of beer.
+Take one down and pass it around, 45 bottles of beer on the wall.
+
+45 bottles of beer on the wall, 45 bottles of beer.
+Take one down and pass it around, 44 bottles of beer on the wall.
+
+44 bottles of beer on the wall, 44 bottles of beer.
+Take one down and pass it around, 43 bottles of beer on the wall.
+
+43 bottles of beer on the wall, 43 bottles of beer.
+Take one down and pass it around, 42 bottles of beer on the wall.
+
+42 bottles of beer on the wall, 42 bottles of beer.
+Take one down and pass it around, 41 bottles of beer on the wall.
+
+41 bottles of beer on the wall, 41 bottles of beer.
+Take one down and pass it around, 40 bottles of beer on the wall.
+
+40 bottles of beer on the wall, 40 bottles of beer.
+Take one down and pass it around, 39 bottles of beer on the wall.
+
+39 bottles of beer on the wall, 39 bottles of beer.
+Take one down and pass it around, 38 bottles of beer on the wall.
+
+38 bottles of beer on the wall, 38 bottles of beer.
+Take one down and pass it around, 37 bottles of beer on the wall.
+
+37 bottles of beer on the wall, 37 bottles of beer.
+Take one down and pass it around, 36 bottles of beer on the wall.
+
+36 bottles of beer on the wall, 36 bottles of beer.
+Take one down and pass it around, 35 bottles of beer on the wall.
+
+35 bottles of beer on the wall, 35 bottles of beer.
+Take one down and pass it around, 34 bottles of beer on the wall.
+
+34 bottles of beer on the wall, 34 bottles of beer.
+Take one down and pass it around, 33 bottles of beer on the wall.
+
+33 bottles of beer on the wall, 33 bottles of beer.
+Take one down and pass it around, 32 bottles of beer on the wall.
+
+32 bottles of beer on the wall, 32 bottles of beer.
+Take one down and pass it around, 31 bottles of beer on the wall.
+
+31 bottles of beer on the wall, 31 bottles of beer.
+Take one down and pass it around, 30 bottles of beer on the wall.
+
+30 bottles of beer on the wall, 30 bottles of beer.
+Take one down and pass it around, 29 bottles of beer on the wall.
+
+29 bottles of beer on the wall, 29 bottles of beer.
+Take one down and pass it around, 28 bottles of beer on the wall.
+
+28 bottles of beer on the wall, 28 bottles of beer.
+Take one down and pass it around, 27 bottles of beer on the wall.
+
+27 bottles of beer on the wall, 27 bottles of beer.
+Take one down and pass it around, 26 bottles of beer on the wall.
+
+26 bottles of beer on the wall, 26 bottles of beer.
+Take one down and pass it around, 25 bottles of beer on the wall.
+
+25 bottles of beer on the wall, 25 bottles of beer.
+Take one down and pass it around, 24 bottles of beer on the wall.
+
+24 bottles of beer on the wall, 24 bottles of beer.
+Take one down and pass it around, 23 bottles of beer on the wall.
+
+23 bottles of beer on the wall, 23 bottles of beer.
+Take one down and pass it around, 22 bottles of beer on the wall.
+
+22 bottles of beer on the wall, 22 bottles of beer.
+Take one down and pass it around, 21 bottles of beer on the wall.
+
+21 bottles of beer on the wall, 21 bottles of beer.
+Take one down and pass it around, 20 bottles of beer on the wall.
+
+20 bottles of beer on the wall, 20 bottles of beer.
+Take one down and pass it around, 19 bottles of beer on the wall.
+
+19 bottles of beer on the wall, 19 bottles of beer.
+Take one down and pass it around, 18 bottles of beer on the wall.
+
+18 bottles of beer on the wall, 18 bottles of beer.
+Take one down and pass it around, 17 bottles of beer on the wall.
+
+17 bottles of beer on the wall, 17 bottles of beer.
+Take one down and pass it around, 16 bottles of beer on the wall.
+
+16 bottles of beer on the wall, 16 bottles of beer.
+Take one down and pass it around, 15 bottles of beer on the wall.
+
+15 bottles of beer on the wall, 15 bottles of beer.
+Take one down and pass it around, 14 bottles of beer on the wall.
+
+14 bottles of beer on the wall, 14 bottles of beer.
+Take one down and pass it around, 13 bottles of beer on the wall.
+
+13 bottles of beer on the wall, 13 bottles of beer.
+Take one down and pass it around, 12 bottles of beer on the wall.
+
+12 bottles of beer on the wall, 12 bottles of beer.
+Take one down and pass it around, 11 bottles of beer on the wall.
+
+11 bottles of beer on the wall, 11 bottles of beer.
+Take one down and pass it around, 10 bottles of beer on the wall.
+
+10 bottles of beer on the wall, 10 bottles of beer.
+Take one down and pass it around, 9 bottles of beer on the wall.
+
+9 bottles of beer on the wall, 9 bottles of beer.
+Take one down and pass it around, 8 bottles of beer on the wall.
+
+8 bottles of beer on the wall, 8 bottles of beer.
+Take one down and pass it around, 7 bottles of beer on the wall.
+
+7 bottles of beer on the wall, 7 bottles of beer.
+Take one down and pass it around, 6 bottles of beer on the wall.
+
+6 bottles of beer on the wall, 6 bottles of beer.
+Take one down and pass it around, 5 bottles of beer on the wall.
+
+5 bottles of beer on the wall, 5 bottles of beer.
+Take one down and pass it around, 4 bottles of beer on the wall.
+
+4 bottles of beer on the wall, 4 bottles of beer.
+Take one down and pass it around, 3 bottles of beer on the wall.
+
+3 bottles of beer on the wall, 3 bottles of beer.
+Take one down and pass it around, 2 bottles of beer on the wall.
+
+2 bottles of beer on the wall, 2 bottles of beer.
+Take one down and pass it around, 1 bottle of beer on the wall.
+
+1 bottle of beer on the wall, 1 bottle of beer.
+Take it down and pass it around, no more bottles of beer on the wall.
+
+No more bottles of beer on the wall, no more bottles of beer.
+Go to the store and buy some more, 99 bottles of beer on the wall.
+```
+
+## For bonus points
+
+Did you get the tests passing and the code clean? If you want to, these
+are some additional things you could try:
+
+* Remove as much duplication as you possibly can.
+* Optimize for readability, even if it means introducing duplication.
+* If you've removed all the duplication, do you have a lot of
+  conditionals? Try replacing the conditionals with polymorphism, if it
+  applies in this language. How readable is it?
+
+Then please share your thoughts in a comment on the submission. Did this
+experiment make the code better? Worse? Did you learn anything from it?
+
+## Running tests
+
+Execute the tests with:
+
+```bash
+$ elixir beer_song_test.exs
+```
+
+### Pending tests
+
+In the test suites, all but the first test have been skipped.
+
+Once you get a test passing, you can unskip the next one by
+commenting out the relevant `@tag :pending` with a `#` symbol.
+
+For example:
+
+```elixir
+# @tag :pending
+test "shouting" do
+  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
+end
+```
+
+Or, you can enable all the tests by commenting out the
+`ExUnit.configure` line in the test suite.
+
+```elixir
+# ExUnit.configure exclude: :pending, trace: true
+```
+
+For more detailed information about the Elixir track, please
+see the [help page](http://exercism.io/languages/elixir).
+
+## Source
+
+Learn to Program by Chris Pine [http://pine.fm/LearnToProgram/?Chapter=06](http://pine.fm/LearnToProgram/?Chapter=06)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/elixir/beer-song/beer_song.exs b/elixir/beer-song/beer_song.exs
new file mode 100644
index 0000000..490f93b
--- /dev/null
+++ b/elixir/beer-song/beer_song.exs
@@ -0,0 +1,40 @@
+defmodule BeerSong do
+  @doc """
+  Get a single verse of the beer song
+  """
+  @spec verse(integer) :: String.t()
+  def verse(number) do
+    """
+    #{String.capitalize(bottle_num(number))} of beer on the wall, #{bottle_num(number)} of beer.
+    #{action(number)}, #{bottle_num(number - 1)} of beer on the wall.
+    """
+  end
+
+  defp bottle_num(num) do
+    case num do
+      1 -> "1 bottle"
+      0 -> "no more bottles"
+      n when n < 0 -> "99 bottles"
+      _ -> "#{num} bottles"
+    end
+  end
+
+  defp action(num) do
+    if num == 0 do
+      "Go to the store and buy some more"
+    else
+      article = if num == 1, do: "it", else: "one"
+      "Take #{article} down and pass it around"
+    end
+  end
+
+  @doc """
+  Get the entire beer song for a given range of numbers of bottles.
+  """
+  @spec lyrics(Range.t()) :: String.t()
+  def lyrics(range \\ 99..0) do
+    range
+    |> Enum.map(&verse/1)
+    |> Enum.join("\n")
+  end
+end
diff --git a/elixir/beer-song/beer_song_test.exs b/elixir/beer-song/beer_song_test.exs
new file mode 100644
index 0000000..d606e87
--- /dev/null
+++ b/elixir/beer-song/beer_song_test.exs
@@ -0,0 +1,363 @@
+if !System.get_env("EXERCISM_TEST_EXAMPLES") do
+  Code.load_file("beer_song.exs", __DIR__)
+end
+
+ExUnit.start()
+ExUnit.configure(trace: true)
+
+defmodule BeerSongTest do
+  use ExUnit.Case
+
+  test "getting the first verse (99 bottles)" do
+    assert BeerSong.verse(99) == """
+           99 bottles of beer on the wall, 99 bottles of beer.
+           Take one down and pass it around, 98 bottles of beer on the wall.
+           """
+  end
+
+  @tag :pending
+  test "getting the second verse (98 bottles)" do
+    assert BeerSong.verse(98) == """
+           98 bottles of beer on the wall, 98 bottles of beer.
+           Take one down and pass it around, 97 bottles of beer on the wall.
+           """
+  end
+
+  @tag :pending
+  test "getting just the penultimate verse" do
+    assert BeerSong.verse(1) == """
+           1 bottle of beer on the wall, 1 bottle of beer.
+           Take it down and pass it around, no more bottles of beer on the wall.
+           """
+  end
+
+  @tag :pending
+  test "getting just the last verse" do
+    assert BeerSong.verse(0) == """
+           No more bottles of beer on the wall, no more bottles of beer.
+           Go to the store and buy some more, 99 bottles of beer on the wall.
+           """
+  end
+
+  @tag :pending
+  test "getting the last 4 verses" do
+    assert BeerSong.lyrics(3..0) == """
+           3 bottles of beer on the wall, 3 bottles of beer.
+           Take one down and pass it around, 2 bottles of beer on the wall.
+
+           2 bottles of beer on the wall, 2 bottles of beer.
+           Take one down and pass it around, 1 bottle of beer on the wall.
+
+           1 bottle of beer on the wall, 1 bottle of beer.
+           Take it down and pass it around, no more bottles of beer on the wall.
+
+           No more bottles of beer on the wall, no more bottles of beer.
+           Go to the store and buy some more, 99 bottles of beer on the wall.
+           """
+  end
+
+  @tag :pending
+  test "getting the whole song" do
+    assert BeerSong.lyrics() == """
+           99 bottles of beer on the wall, 99 bottles of beer.
+           Take one down and pass it around, 98 bottles of beer on the wall.
+
+           98 bottles of beer on the wall, 98 bottles of beer.
+           Take one down and pass it around, 97 bottles of beer on the wall.
+
+           97 bottles of beer on the wall, 97 bottles of beer.
+           Take one down and pass it around, 96 bottles of beer on the wall.
+
+           96 bottles of beer on the wall, 96 bottles of beer.
+           Take one down and pass it around, 95 bottles of beer on the wall.
+
+           95 bottles of beer on the wall, 95 bottles of beer.
+           Take one down and pass it around, 94 bottles of beer on the wall.
+
+           94 bottles of beer on the wall, 94 bottles of beer.
+           Take one down and pass it around, 93 bottles of beer on the wall.
+
+           93 bottles of beer on the wall, 93 bottles of beer.
+           Take one down and pass it around, 92 bottles of beer on the wall.
+
+           92 bottles of beer on the wall, 92 bottles of beer.
+           Take one down and pass it around, 91 bottles of beer on the wall.
+
+           91 bottles of beer on the wall, 91 bottles of beer.
+           Take one down and pass it around, 90 bottles of beer on the wall.
+
+           90 bottles of beer on the wall, 90 bottles of beer.
+           Take one down and pass it around, 89 bottles of beer on the wall.
+
+           89 bottles of beer on the wall, 89 bottles of beer.
+           Take one down and pass it around, 88 bottles of beer on the wall.
+
+           88 bottles of beer on the wall, 88 bottles of beer.
+           Take one down and pass it around, 87 bottles of beer on the wall.
+
+           87 bottles of beer on the wall, 87 bottles of beer.
+           Take one down and pass it around, 86 bottles of beer on the wall.
+
+           86 bottles of beer on the wall, 86 bottles of beer.
+           Take one down and pass it around, 85 bottles of beer on the wall.
+
+           85 bottles of beer on the wall, 85 bottles of beer.
+           Take one down and pass it around, 84 bottles of beer on the wall.
+
+           84 bottles of beer on the wall, 84 bottles of beer.
+           Take one down and pass it around, 83 bottles of beer on the wall.
+
+           83 bottles of beer on the wall, 83 bottles of beer.
+           Take one down and pass it around, 82 bottles of beer on the wall.
+
+           82 bottles of beer on the wall, 82 bottles of beer.
+           Take one down and pass it around, 81 bottles of beer on the wall.
+
+           81 bottles of beer on the wall, 81 bottles of beer.
+           Take one down and pass it around, 80 bottles of beer on the wall.
+
+           80 bottles of beer on the wall, 80 bottles of beer.
+           Take one down and pass it around, 79 bottles of beer on the wall.
+
+           79 bottles of beer on the wall, 79 bottles of beer.
+           Take one down and pass it around, 78 bottles of beer on the wall.
+
+           78 bottles of beer on the wall, 78 bottles of beer.
+           Take one down and pass it around, 77 bottles of beer on the wall.
+
+           77 bottles of beer on the wall, 77 bottles of beer.
+           Take one down and pass it around, 76 bottles of beer on the wall.
+
+           76 bottles of beer on the wall, 76 bottles of beer.
+           Take one down and pass it around, 75 bottles of beer on the wall.
+
+           75 bottles of beer on the wall, 75 bottles of beer.
+           Take one down and pass it around, 74 bottles of beer on the wall.
+
+           74 bottles of beer on the wall, 74 bottles of beer.
+           Take one down and pass it around, 73 bottles of beer on the wall.
+
+           73 bottles of beer on the wall, 73 bottles of beer.
+           Take one down and pass it around, 72 bottles of beer on the wall.
+
+           72 bottles of beer on the wall, 72 bottles of beer.
+           Take one down and pass it around, 71 bottles of beer on the wall.
+
+           71 bottles of beer on the wall, 71 bottles of beer.
+           Take one down and pass it around, 70 bottles of beer on the wall.
+
+           70 bottles of beer on the wall, 70 bottles of beer.
+           Take one down and pass it around, 69 bottles of beer on the wall.
+
+           69 bottles of beer on the wall, 69 bottles of beer.
+           Take one down and pass it around, 68 bottles of beer on the wall.
+
+           68 bottles of beer on the wall, 68 bottles of beer.
+           Take one down and pass it around, 67 bottles of beer on the wall.
+
+           67 bottles of beer on the wall, 67 bottles of beer.
+           Take one down and pass it around, 66 bottles of beer on the wall.
+
+           66 bottles of beer on the wall, 66 bottles of beer.
+           Take one down and pass it around, 65 bottles of beer on the wall.
+
+           65 bottles of beer on the wall, 65 bottles of beer.
+           Take one down and pass it around, 64 bottles of beer on the wall.
+
+           64 bottles of beer on the wall, 64 bottles of beer.
+           Take one down and pass it around, 63 bottles of beer on the wall.
+
+           63 bottles of beer on the wall, 63 bottles of beer.
+           Take one down and pass it around, 62 bottles of beer on the wall.
+
+           62 bottles of beer on the wall, 62 bottles of beer.
+           Take one down and pass it around, 61 bottles of beer on the wall.
+
+           61 bottles of beer on the wall, 61 bottles of beer.
+           Take one down and pass it around, 60 bottles of beer on the wall.
+
+           60 bottles of beer on the wall, 60 bottles of beer.
+           Take one down and pass it around, 59 bottles of beer on the wall.
+
+           59 bottles of beer on the wall, 59 bottles of beer.
+           Take one down and pass it around, 58 bottles of beer on the wall.
+
+           58 bottles of beer on the wall, 58 bottles of beer.
+           Take one down and pass it around, 57 bottles of beer on the wall.
+
+           57 bottles of beer on the wall, 57 bottles of beer.
+           Take one down and pass it around, 56 bottles of beer on the wall.
+
+           56 bottles of beer on the wall, 56 bottles of beer.
+           Take one down and pass it around, 55 bottles of beer on the wall.
+
+           55 bottles of beer on the wall, 55 bottles of beer.
+           Take one down and pass it around, 54 bottles of beer on the wall.
+
+           54 bottles of beer on the wall, 54 bottles of beer.
+           Take one down and pass it around, 53 bottles of beer on the wall.
+
+           53 bottles of beer on the wall, 53 bottles of beer.
+           Take one down and pass it around, 52 bottles of beer on the wall.
+
+           52 bottles of beer on the wall, 52 bottles of beer.
+           Take one down and pass it around, 51 bottles of beer on the wall.
+
+           51 bottles of beer on the wall, 51 bottles of beer.
+           Take one down and pass it around, 50 bottles of beer on the wall.
+
+           50 bottles of beer on the wall, 50 bottles of beer.
+           Take one down and pass it around, 49 bottles of beer on the wall.
+
+           49 bottles of beer on the wall, 49 bottles of beer.
+           Take one down and pass it around, 48 bottles of beer on the wall.
+
+           48 bottles of beer on the wall, 48 bottles of beer.
+           Take one down and pass it around, 47 bottles of beer on the wall.
+
+           47 bottles of beer on the wall, 47 bottles of beer.
+           Take one down and pass it around, 46 bottles of beer on the wall.
+
+           46 bottles of beer on the wall, 46 bottles of beer.
+           Take one down and pass it around, 45 bottles of beer on the wall.
+
+           45 bottles of beer on the wall, 45 bottles of beer.
+           Take one down and pass it around, 44 bottles of beer on the wall.
+
+           44 bottles of beer on the wall, 44 bottles of beer.
+           Take one down and pass it around, 43 bottles of beer on the wall.
+
+           43 bottles of beer on the wall, 43 bottles of beer.
+           Take one down and pass it around, 42 bottles of beer on the wall.
+
+           42 bottles of beer on the wall, 42 bottles of beer.
+           Take one down and pass it around, 41 bottles of beer on the wall.
+
+           41 bottles of beer on the wall, 41 bottles of beer.
+           Take one down and pass it around, 40 bottles of beer on the wall.
+
+           40 bottles of beer on the wall, 40 bottles of beer.
+           Take one down and pass it around, 39 bottles of beer on the wall.
+
+           39 bottles of beer on the wall, 39 bottles of beer.
+           Take one down and pass it around, 38 bottles of beer on the wall.
+
+           38 bottles of beer on the wall, 38 bottles of beer.
+           Take one down and pass it around, 37 bottles of beer on the wall.
+
+           37 bottles of beer on the wall, 37 bottles of beer.
+           Take one down and pass it around, 36 bottles of beer on the wall.
+
+           36 bottles of beer on the wall, 36 bottles of beer.
+           Take one down and pass it around, 35 bottles of beer on the wall.
+
+           35 bottles of beer on the wall, 35 bottles of beer.
+           Take one down and pass it around, 34 bottles of beer on the wall.
+
+           34 bottles of beer on the wall, 34 bottles of beer.
+           Take one down and pass it around, 33 bottles of beer on the wall.
+
+           33 bottles of beer on the wall, 33 bottles of beer.
+           Take one down and pass it around, 32 bottles of beer on the wall.
+
+           32 bottles of beer on the wall, 32 bottles of beer.
+           Take one down and pass it around, 31 bottles of beer on the wall.
+
+           31 bottles of beer on the wall, 31 bottles of beer.
+           Take one down and pass it around, 30 bottles of beer on the wall.
+
+           30 bottles of beer on the wall, 30 bottles of beer.
+           Take one down and pass it around, 29 bottles of beer on the wall.
+
+           29 bottles of beer on the wall, 29 bottles of beer.
+           Take one down and pass it around, 28 bottles of beer on the wall.
+
+           28 bottles of beer on the wall, 28 bottles of beer.
+           Take one down and pass it around, 27 bottles of beer on the wall.
+
+           27 bottles of beer on the wall, 27 bottles of beer.
+           Take one down and pass it around, 26 bottles of beer on the wall.
+
+           26 bottles of beer on the wall, 26 bottles of beer.
+           Take one down and pass it around, 25 bottles of beer on the wall.
+
+           25 bottles of beer on the wall, 25 bottles of beer.
+           Take one down and pass it around, 24 bottles of beer on the wall.
+
+           24 bottles of beer on the wall, 24 bottles of beer.
+           Take one down and pass it around, 23 bottles of beer on the wall.
+
+           23 bottles of beer on the wall, 23 bottles of beer.
+           Take one down and pass it around, 22 bottles of beer on the wall.
+
+           22 bottles of beer on the wall, 22 bottles of beer.
+           Take one down and pass it around, 21 bottles of beer on the wall.
+
+           21 bottles of beer on the wall, 21 bottles of beer.
+           Take one down and pass it around, 20 bottles of beer on the wall.
+
+           20 bottles of beer on the wall, 20 bottles of beer.
+           Take one down and pass it around, 19 bottles of beer on the wall.
+
+           19 bottles of beer on the wall, 19 bottles of beer.
+           Take one down and pass it around, 18 bottles of beer on the wall.
+
+           18 bottles of beer on the wall, 18 bottles of beer.
+           Take one down and pass it around, 17 bottles of beer on the wall.
+
+           17 bottles of beer on the wall, 17 bottles of beer.
+           Take one down and pass it around, 16 bottles of beer on the wall.
+
+           16 bottles of beer on the wall, 16 bottles of beer.
+           Take one down and pass it around, 15 bottles of beer on the wall.
+
+           15 bottles of beer on the wall, 15 bottles of beer.
+           Take one down and pass it around, 14 bottles of beer on the wall.
+
+           14 bottles of beer on the wall, 14 bottles of beer.
+           Take one down and pass it around, 13 bottles of beer on the wall.
+
+           13 bottles of beer on the wall, 13 bottles of beer.
+           Take one down and pass it around, 12 bottles of beer on the wall.
+
+           12 bottles of beer on the wall, 12 bottles of beer.
+           Take one down and pass it around, 11 bottles of beer on the wall.
+
+           11 bottles of beer on the wall, 11 bottles of beer.
+           Take one down and pass it around, 10 bottles of beer on the wall.
+
+           10 bottles of beer on the wall, 10 bottles of beer.
+           Take one down and pass it around, 9 bottles of beer on the wall.
+
+           9 bottles of beer on the wall, 9 bottles of beer.
+           Take one down and pass it around, 8 bottles of beer on the wall.
+
+           8 bottles of beer on the wall, 8 bottles of beer.
+           Take one down and pass it around, 7 bottles of beer on the wall.
+
+           7 bottles of beer on the wall, 7 bottles of beer.
+           Take one down and pass it around, 6 bottles of beer on the wall.
+
+           6 bottles of beer on the wall, 6 bottles of beer.
+           Take one down and pass it around, 5 bottles of beer on the wall.
+
+           5 bottles of beer on the wall, 5 bottles of beer.
+           Take one down and pass it around, 4 bottles of beer on the wall.
+
+           4 bottles of beer on the wall, 4 bottles of beer.
+           Take one down and pass it around, 3 bottles of beer on the wall.
+
+           3 bottles of beer on the wall, 3 bottles of beer.
+           Take one down and pass it around, 2 bottles of beer on the wall.
+
+           2 bottles of beer on the wall, 2 bottles of beer.
+           Take one down and pass it around, 1 bottle of beer on the wall.
+
+           1 bottle of beer on the wall, 1 bottle of beer.
+           Take it down and pass it around, no more bottles of beer on the wall.
+
+           No more bottles of beer on the wall, no more bottles of beer.
+           Go to the store and buy some more, 99 bottles of beer on the wall.
+           """
+  end
+end
diff --git a/elixir/grade-school/README.md b/elixir/grade-school/README.md
new file mode 100644
index 0000000..629cd32
--- /dev/null
+++ b/elixir/grade-school/README.md
@@ -0,0 +1,76 @@
+# Grade School
+
+Given students' names along with the grade that they are in, create a roster
+for the school.
+
+In the end, you should be able to:
+
+- Add a student's name to the roster for a grade
+  - "Add Jim to grade 2."
+  - "OK."
+- Get a list of all students enrolled in a grade
+  - "Which students are in grade 2?"
+  - "We've only got Jim just now."
+- Get a sorted list of all students in all grades.  Grades should sort
+  as 1, 2, 3, etc., and students within a grade should be sorted
+  alphabetically by name.
+  - "Who all is enrolled in school right now?"
+  - "Grade 1: Anna, Barb, and Charlie. Grade 2: Alex, Peter, and Zoe.
+    Grade 3…"
+
+Note that all our students only have one name.  (It's a small town, what
+do you want?)
+
+## For bonus points
+
+Did you get the tests passing and the code clean? If you want to, these
+are some additional things you could try:
+
+- If you're working in a language with mutable data structures and your
+  implementation allows outside code to mutate the school's internal DB
+  directly, see if you can prevent this. Feel free to introduce additional
+  tests.
+
+Then please share your thoughts in a comment on the submission. Did this
+experiment make the code better? Worse? Did you learn anything from it?
+
+## Running tests
+
+Execute the tests with:
+
+```bash
+$ elixir grade_school_test.exs
+```
+
+### Pending tests
+
+In the test suites, all but the first test have been skipped.
+
+Once you get a test passing, you can unskip the next one by
+commenting out the relevant `@tag :pending` with a `#` symbol.
+
+For example:
+
+```elixir
+# @tag :pending
+test "shouting" do
+  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
+end
+```
+
+Or, you can enable all the tests by commenting out the
+`ExUnit.configure` line in the test suite.
+
+```elixir
+# ExUnit.configure exclude: :pending, trace: true
+```
+
+For more detailed information about the Elixir track, please
+see the [help page](http://exercism.io/languages/elixir).
+
+## Source
+
+A pairing session with Phil Battos at gSchool [http://gschool.it](http://gschool.it)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/elixir/grade-school/grade_school_test.exs b/elixir/grade-school/grade_school_test.exs
new file mode 100644
index 0000000..441f29e
--- /dev/null
+++ b/elixir/grade-school/grade_school_test.exs
@@ -0,0 +1,75 @@
+if !System.get_env("EXERCISM_TEST_EXAMPLES") do
+  Code.load_file("school.exs", __DIR__)
+end
+
+ExUnit.start()
+ExUnit.configure(trace: true)
+
+defmodule SchoolTest do
+  use ExUnit.Case
+
+  @db %{}
+
+  test "add student" do
+    actual = School.add(@db, "Aimee", 2)
+    assert actual == %{2 => ["Aimee"]}
+  end
+
+  @tag :pending
+  test "add more students in same class" do
+    actual =
+      @db
+      |> School.add("James", 2)
+      |> School.add("Blair", 2)
+      |> School.add("Paul", 2)
+
+    assert Enum.sort(actual[2]) == ["Blair", "James", "Paul"]
+  end
+
+  @tag :pending
+  test "add students to different grades" do
+    actual =
+      @db
+      |> School.add("Chelsea", 3)
+      |> School.add("Logan", 7)
+
+    assert actual == %{3 => ["Chelsea"], 7 => ["Logan"]}
+  end
+
+  @tag :pending
+  test "get students in a grade" do
+    actual =
+      @db
+      |> School.add("Bradley", 5)
+      |> School.add("Franklin", 5)
+      |> School.add("Jeff", 1)
+      |> School.grade(5)
+
+    assert Enum.sort(actual) == ["Bradley", "Franklin"]
+  end
+
+  @tag :pending
+  test "get students in a non existent grade" do
+    assert [] == School.grade(@db, 1)
+  end
+
+  @tag :pending
+  test "sort school by grade and by student name" do
+    actual =
+      @db
+      |> School.add("Bart", 4)
+      |> School.add("Jennifer", 4)
+      |> School.add("Christopher", 4)
+      |> School.add("Kareem", 6)
+      |> School.add("Kyle", 3)
+      |> School.sort()
+
+    expected = [
+      {3, ["Kyle"]},
+      {4, ["Bart", "Christopher", "Jennifer"]},
+      {6, ["Kareem"]}
+    ]
+
+    assert expected == actual
+  end
+end
diff --git a/elixir/grade-school/school.exs b/elixir/grade-school/school.exs
new file mode 100644
index 0000000..4f20c59
--- /dev/null
+++ b/elixir/grade-school/school.exs
@@ -0,0 +1,28 @@
+defmodule School do
+  @moduledoc """
+  Simulate students in a school.
+
+  Each student is in a grade.
+  """
+
+  @doc """
+  Add a student to a particular grade in school.
+  """
+  @spec add(map, String.t(), integer) :: map
+  def add(db, name, grade) do
+  end
+
+  @doc """
+  Return the names of the students in a particular grade.
+  """
+  @spec grade(map, integer) :: [String.t()]
+  def grade(db, grade) do
+  end
+
+  @doc """
+  Sorts the school by grade and name.
+  """
+  @spec sort(map) :: [{integer, [String.t()]}]
+  def sort(db) do
+  end
+end
diff --git a/elixir/isogram/README.md b/elixir/isogram/README.md
new file mode 100644
index 0000000..e231732
--- /dev/null
+++ b/elixir/isogram/README.md
@@ -0,0 +1,55 @@
+# Isogram
+
+Determine if a word or phrase is an isogram.
+
+An isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed to appear multiple times.
+
+Examples of isograms:
+
+- lumberjacks
+- background
+- downstream
+- six-year-old
+
+The word *isograms*, however, is not an isogram, because the s repeats.
+
+## Running tests
+
+Execute the tests with:
+
+```bash
+$ elixir isogram_test.exs
+```
+
+### Pending tests
+
+In the test suites, all but the first test have been skipped.
+
+Once you get a test passing, you can unskip the next one by
+commenting out the relevant `@tag :pending` with a `#` symbol.
+
+For example:
+
+```elixir
+# @tag :pending
+test "shouting" do
+  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
+end
+```
+
+Or, you can enable all the tests by commenting out the
+`ExUnit.configure` line in the test suite.
+
+```elixir
+# ExUnit.configure exclude: :pending, trace: true
+```
+
+For more detailed information about the Elixir track, please
+see the [help page](http://exercism.io/languages/elixir).
+
+## Source
+
+Wikipedia [https://en.wikipedia.org/wiki/Isogram](https://en.wikipedia.org/wiki/Isogram)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/elixir/isogram/isogram.exs b/elixir/isogram/isogram.exs
new file mode 100644
index 0000000..c106682
--- /dev/null
+++ b/elixir/isogram/isogram.exs
@@ -0,0 +1,10 @@
+defmodule Isogram do
+  @doc """
+  Determines if a word or sentence is an isogram
+  """
+  @spec isogram?(String.t()) :: boolean
+  def isogram?(sentence) do
+    letters = Regex.scan(~r/[a-z]/, String.downcase(sentence))
+    Enum.uniq(letters) == letters
+  end
+end
diff --git a/elixir/isogram/isogram_test.exs b/elixir/isogram/isogram_test.exs
new file mode 100644
index 0000000..b900fcc
--- /dev/null
+++ b/elixir/isogram/isogram_test.exs
@@ -0,0 +1,49 @@
+if !System.get_env("EXERCISM_TEST_EXAMPLES") do
+  Code.load_file("isogram.exs", __DIR__)
+end
+
+ExUnit.start()
+ExUnit.configure(trace: true)
+
+defmodule IsogramTest do
+  use ExUnit.Case
+
+  test "isogram lowercase" do
+    assert Isogram.isogram?("subdermatoglyphic")
+  end
+
+  @tag :pending
+  test "not isogram lowercase " do
+    refute Isogram.isogram?("eleven")
+  end
+
+  @tag :pending
+  test "isogram uppercase" do
+    assert Isogram.isogram?("DEMONSTRABLY")
+  end
+
+  @tag :pending
+  test "not isogram uppercase" do
+    refute Isogram.isogram?("ALPHABET")
+  end
+
+  @tag :pending
+  test "isogram with dash" do
+    assert Isogram.isogram?("hjelmqvist-gryb-zock-pfund-wax")
+  end
+
+  @tag :pending
+  test "not isogram with dash" do
+    refute Isogram.isogram?("twenty-five")
+  end
+
+  @tag :pending
+  test "phrase is isogram" do
+    assert Isogram.isogram?("emily jung schwartzkopf")
+  end
+
+  @tag :pending
+  test "phrase is not isogram" do
+    refute Isogram.isogram?("the quick brown fox")
+  end
+end
diff --git a/elixir/triangle/README.md b/elixir/triangle/README.md
new file mode 100644
index 0000000..f201e92
--- /dev/null
+++ b/elixir/triangle/README.md
@@ -0,0 +1,64 @@
+# Triangle
+
+Determine if a triangle is equilateral, isosceles, or scalene.
+
+An _equilateral_ triangle has all three sides the same length.
+
+An _isosceles_ triangle has at least two sides the same length. (It is sometimes
+specified as having exactly two sides the same length, but for the purposes of
+this exercise we'll say at least two.)
+
+A _scalene_ triangle has all sides of different lengths.
+
+## Note
+
+For a shape to be a triangle at all, all sides have to be of length > 0, and
+the sum of the lengths of any two sides must be greater than or equal to the
+length of the third side. See [Triangle Inequality](https://en.wikipedia.org/wiki/Triangle_inequality).
+
+## Dig Deeper
+
+The case where the sum of the lengths of two sides _equals_ that of the
+third is known as a _degenerate_ triangle - it has zero area and looks like
+a single line. Feel free to add your own code/tests to check for degenerate triangles.
+
+## Running tests
+
+Execute the tests with:
+
+```bash
+$ elixir triangle_test.exs
+```
+
+### Pending tests
+
+In the test suites, all but the first test have been skipped.
+
+Once you get a test passing, you can unskip the next one by
+commenting out the relevant `@tag :pending` with a `#` symbol.
+
+For example:
+
+```elixir
+# @tag :pending
+test "shouting" do
+  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
+end
+```
+
+Or, you can enable all the tests by commenting out the
+`ExUnit.configure` line in the test suite.
+
+```elixir
+# ExUnit.configure exclude: :pending, trace: true
+```
+
+For more detailed information about the Elixir track, please
+see the [help page](http://exercism.io/languages/elixir).
+
+## Source
+
+The Ruby Koans triangle project, parts 1 & 2 [http://rubykoans.com](http://rubykoans.com)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/elixir/triangle/triangle.exs b/elixir/triangle/triangle.exs
new file mode 100644
index 0000000..16ee550
--- /dev/null
+++ b/elixir/triangle/triangle.exs
@@ -0,0 +1,28 @@
+defmodule Triangle do
+  @type kind :: :equilateral | :isosceles | :scalene
+
+  @doc """
+  Return the kind of triangle of a triangle with 'a', 'b' and 'c' as lengths.
+  """
+  @spec kind(number, number, number) :: {:ok, kind} | {:error, String.t()}
+  def kind(a, b, c) when a <= 0 or b <= 0 or c <= 0 do
+    {:error, "all side lengths must be positive"}
+  end
+
+  def kind(a, b, c) when a + b <= c or b + c <= a or c + a <= b do
+    {:error, "side lengths violate triangle inequality"}
+  end
+
+  def kind(a, b, c) do
+    cond do
+      a == b && b == c ->
+        {:ok, :equilateral}
+
+      a == b || b == c || a == c ->
+        {:ok, :isosceles}
+
+      true ->
+        {:ok, :scalene}
+    end
+  end
+end
diff --git a/elixir/triangle/triangle_test.exs b/elixir/triangle/triangle_test.exs
new file mode 100644
index 0000000..467591e
--- /dev/null
+++ b/elixir/triangle/triangle_test.exs
@@ -0,0 +1,85 @@
+if !System.get_env("EXERCISM_TEST_EXAMPLES") do
+  Code.load_file("triangle.exs", __DIR__)
+end
+
+ExUnit.start()
+ExUnit.configure(trace: true)
+
+defmodule TriangleTest do
+  use ExUnit.Case
+
+  # @tag :pending
+  test "equilateral triangles have equal sides" do
+    assert Triangle.kind(2, 2, 2) == {:ok, :equilateral}
+  end
+
+  @tag :pending
+  test "larger equilateral triangles also have equal sides" do
+    assert Triangle.kind(10, 10, 10) == {:ok, :equilateral}
+  end
+
+  @tag :pending
+  test "isosceles triangles have last two sides equal" do
+    assert Triangle.kind(3, 4, 4) == {:ok, :isosceles}
+  end
+
+  @tag :pending
+  test "isosceles triangles have first and last sides equal" do
+    assert Triangle.kind(4, 3, 4) == {:ok, :isosceles}
+  end
+
+  @tag :pending
+  test "isosceles triangles have two first sides equal" do
+    assert Triangle.kind(4, 4, 3) == {:ok, :isosceles}
+  end
+
+  @tag :pending
+  test "isosceles triangles have in fact exactly two sides equal" do
+    assert Triangle.kind(10, 10, 2) == {:ok, :isosceles}
+  end
+
+  @tag :pending
+  test "scalene triangles have no equal sides" do
+    assert Triangle.kind(3, 4, 5) == {:ok, :scalene}
+  end
+
+  @tag :pending
+  test "scalene triangles have no equal sides at a larger scale too" do
+    assert Triangle.kind(10, 11, 12) == {:ok, :scalene}
+  end
+
+  @tag :pending
+  test "scalene triangles have no equal sides in descending order either" do
+    assert Triangle.kind(5, 4, 2) == {:ok, :scalene}
+  end
+
+  @tag :pending
+  test "very small triangles are legal" do
+    assert Triangle.kind(0.4, 0.6, 0.3) == {:ok, :scalene}
+  end
+
+  @tag :pending
+  test "triangles with no size are illegal" do
+    assert Triangle.kind(0, 0, 0) == {:error, "all side lengths must be positive"}
+  end
+
+  @tag :pending
+  test "triangles with negative sides are illegal" do
+    assert Triangle.kind(3, 4, -5) == {:error, "all side lengths must be positive"}
+  end
+
+  @tag :pending
+  test "triangles violating triangle inequality are illegal" do
+    assert Triangle.kind(1, 1, 3) == {:error, "side lengths violate triangle inequality"}
+  end
+
+  @tag :pending
+  test "triangles violating triangle inequality are illegal 2" do
+    assert Triangle.kind(2, 4, 2) == {:error, "side lengths violate triangle inequality"}
+  end
+
+  @tag :pending
+  test "triangles violating triangle inequality are illegal 3" do
+    assert Triangle.kind(7, 3, 2) == {:error, "side lengths violate triangle inequality"}
+  end
+end