There was this platformer that came out for Playstation back in 2013 called Sound Shapes. Basically, you would progress throughout levels as the objects and enemies along with the collectibles you grab would form the music. It had a pretty neat level editor along with a now-defunct online service. It has some really good music, especially the music Beck made for it. It's actually how I got into Beck too!
I haven't heard many people talk about it though.
Also I always thought the protagonist looked like an egg.