Piano Game Sans Undertale

Lets play the Sans Undertale piano game with a tap following the rhythm of his music. There are four types in this game: 1. Classic (free), follow the music of the song. 2. Arcade, do not any tiles missing. 3. Zen, a game with given time. 4. Bomb, don't tap the red tiles, it is bomb. Collect your score as much as possible, and look for the highest score. Do not forget rating for this game, and thank you.