I can't believe I can actually play Louie Zong's video!
I love the sea lion's face looking at me when I fail. (￢ω￢)
After Level12, the speed of the gauge decrease is very fast, but once you succeed, the 5-second grace period is restored, so I only need to succeed in the first beat and the last beat, and I can fail a little in the other parts of the game.
I could go up to Level20 at the maximum.