diff --git a/projects/demos/piano.usm b/projects/demos/piano.usm
index c7e77bf..3b442cf 100644
--- a/projects/demos/piano.usm
+++ b/projects/demos/piano.usm
@@ -204,16 +204,17 @@ BRK
 
 	.Controller/button DEI #f0 AND
 	DUP #04 SFT #01 AND #01 NEQ ,&no-up JNZ
-		( move ) .Audio/addr DEI2 #0010 SUB2 .Audio/addr DEO2 &no-up
+		( move ) .Audio/addr DEI2 #0001 SUB2 .Audio/addr DEO2 &no-up
 	DUP #05 SFT #01 AND #01 NEQ ,&no-down JNZ
-		( move ) .Audio/addr DEI2 #0010 ADD2 .Audio/addr DEO2 &no-down
+		( move ) .Audio/addr DEI2 #0001 ADD2 .Audio/addr DEO2 &no-down
 	DUP #06 SFT #01 AND #01 NEQ ,&no-left JNZ
-		( move ) .Audio/addr DEI2 #0001 SUB2 .Audio/addr DEO2 &no-left
+		( move ) .Audio/addr DEI2 #0010 SUB2 .Audio/addr DEO2 &no-left
 	DUP #07 SFT #01 AND #01 NEQ ,&no-right JNZ
-		( move ) .Audio/addr DEI2 ++ .Audio/addr DEO2 &no-right
+		( move ) .Audio/addr DEI2 #0010 ADD2 .Audio/addr DEO2 &no-right
 	POP
 
 	;draw-octave JSR2
+	;draw-wave JSR2
 
 BRK