Very nice that there're tree game modes, that have different music style and theme. But in "The Lonely" mod effects hide texts. Little sad that following the rythm don't give you any benefits. It would be better iIf background would be perfect looped. In hard mode you can continue playing after "you lose" sceen appears.
In total, this game is very nice. Theme changing during the run (like in the chrome dino game) would fit the game.