diff --git a/main.tal b/main.tal
index 4b5a893..0adc9e4 100644
--- a/main.tal
+++ b/main.tal
@@ -409,8 +409,15 @@ RTN
 	PTN_LEN .Playback/position LDZ2 NEQ2 ,&continue JCN ( if we're at the end of the pattern, reset the counter )
 	#0000 .Playback/position STZ2
 	&continue
+	( TODO make this more proper, currently a PoC of polyphony )
 	.Playback/position LDZ2 PTN_WIDTH MUL2 .Channel0/pattern-addr LDZ2 ADD2 ( put pattern line address on the stack )
 	.Audio0 ;play-line JSR2
+	.Playback/position LDZ2 PTN_WIDTH MUL2 .Channel1/pattern-addr LDZ2 ADD2 ( put pattern line address on the stack )
+	.Audio1 ;play-line JSR2
+	.Playback/position LDZ2 PTN_WIDTH MUL2 .Channel2/pattern-addr LDZ2 ADD2 ( put pattern line address on the stack )
+	.Audio2 ;play-line JSR2
+	.Playback/position LDZ2 PTN_WIDTH MUL2 .Channel3/pattern-addr LDZ2 ADD2 ( put pattern line address on the stack )
+	.Audio3 ;play-line JSR2
 	#0001 .Playback/position LDZ2 ADD2 .Playback/position STZ2
 	;draw-playhead JSR2 ( update the playhead position )
 RTN