So I brought this. How to play Accelerate (Master).

First, play the song. Accelerate is a 4/4 beat song. Tap the screen to the beat. One, two, three, four.. Now, let's "accelerate" a bit. Split the beat you're playing in half. (Try tapping twice as fast) 1234 1234.. That's 8 beats. Split it in half one more time. (Try tapping twice as fast again) That's 16 beats, right? Now, if you play at that exact beat? Congratulations, you can now clear the second picture section with an all-perfect!