So I bought the game aaaaaand....
But it's not that bad, I was expecting something more....terrible. Yes there are "holes" more or less larger when music is played, but I noticed it only concern some music when others are played correctly
In any case, it's annoying but it's also bearable (in my opinion). And it wont prevent me to finish the game at 100%.
And like jameskyle
, I hope the sequel will not get this psn only