I'd give this one star but the game mechanics are good enough to save it; the challenge is fun and I like how tedious it can be because it gives me a chance to hyperfocus and pass time. HOWEVER. It takes FOREVER to level up or earn gems to buy new songs. It gets boring and I always end up uninstalling the game. It not only takes forever for those 'crates' to open, they don't even give you a full song!! Why play if I can't even play the very few songs I have in the first place when I want to??