Is it Corner Shop or Corner Shop 2? For me, the mini-game is easier to play on Corner Shop 2. You just have to follow the rhythm. If you touch the instrument at the right time, music notes will appear.
@Asiangotchi: Kuchipatchi and Memetchi haven't unlocked the Music Club yet on Tamagotchi Corner Shop 1. so, Mametchi is fastest......I can barely follow him.....thanks for helping me with it.