When hit keys, doesnt recognize!!

Would b great but its only registering a few of the keys I hit when I play with my keyboard! The volume of the game when I perform is too loud so the game cant register that I played the keys. All it hears is the music!!! Please fix so I can try n use this app. Id love to. Then Id b able to fix this rating....

Not recognizing about Piano Dust Buster by JoyTunes, v3.0.2