Schoo Project-Arduino Midi Drumpads

I'm using fl studio and the ASIO4ALL driver. And sort of, but not really. It works as far as putting out a sound of drums that I can customize for different sounds. They all send the same note but a different tone of that note.
A0=D#6
A1= C6
A2=D6
A3=C#6

A's being our 4 piezoes connected to the analog connections on our arduino uno.
A4 and 5 are grounded.