The game looks cool. I think the presentation was innovative - I liked it, at least; it emphasizes the beat very well.
It seems to me, however, near impossible to tap to that speed and rhythm. This should be the difficulty Hell. (I assume, by the interface, it's played on smartphones.)
Did you figure out how to do x/8 instead of a x/4 measures? Or it simply keeps the same bouncing pattern, just done twice faster?
Also, why have it in Portuguese first? I recognize the game's name is already a hybrid, but I would say the English-speaking audience is likely more numerous.
Good luck on the project!