Proof that a game doesn't need to be difficult to be good.
In most other rhythm games, you take control of the melody. You have many notes and combinations, and therefore many inputs. The melody gets all the love while the bassline goes unnoticed.
Bassline is a rhythm game where you click to the beat. The game has only one input. Choose any of the six songs and try to line up your clicks with the beat. The better your timing, the higher your score.
For higher quality gameplay and a neat audio visualizer, try the standalone version.
FYI: the level "Light Em Up" is incomplete.