Hello, yeah it’s a bit complex to us to explain… You can type “1” in rhythm to go to the 1st layer (as displayed), “2” for the upper one and so on. For example you can float to the top pressing “4” in rhythm.
A good played note is when the metronom (in the bottom part of the screen) is ticking (left / right).
Thanks you for playing, I hope it’s fun :)