Music minigame
From Summertime Saga Wiki
On two occasions in Ms. Dewitt's route, the player will be prompted to pass the music minigame: first during the karaoke session with Eve, then during Ms. Dewitt's talent show. This music rhythm game requires to press buttons in a sequence dictated on the screen.
Instructions
Press the corresponding key on your keyboard – A, S, D or F according to which line the note appears on – when the music note crosses the blue line. 25 notes are presented and only 5 mistakes are allowed. If you fail, a new attempt is restarted immediately after.
Reward
Fulfilling the musical sequence lets the player progress in Ms. Dewitt's route. The achievement named Smooth McGroove is granted if the Music minigame is successful on the first try, during the talent show.