1. Just a low quality clone of other rhythm games cramming into a fashion game.
2. Gameplay is mediocre, needs real money to progress easily.
3. Most rhythm gamers prefer something more challenging and ofc, better gameplay.
4. And somehow ingame music feels kinda illegal to me.
5. There's no way to improve this kind of game.
6. Maybe the devs didin't pay for royalties and such.
7. Charts are too easy.