Angklung usually have two tubes, the big and small tube. The big one is its original note and the small one is its harmony (usually one octave above the original note). In my patch I have to modify it so I can use two different audio. It’s not easy because my patch only have one audio array, I have to add one more and put it in subpatch. After playing around with it I found out that we can communicate between subpatch. It means I can’t use the same variable in my subpatch. This is just a temporary fix for this issue. I think I have to use abstraction for this one.