Everloop

Everloop is the collection of beautiful organic hand-crafted and processed original ambient music tracks. These tracks are the single-instrument layers, building blocks of the instant flawless soundtrack you can create and vary on the fly. The beauty of Everloop is that you can start or stop the layers anytime you want, in any order. They will sound great simultaneously in any combination. There is the Randomize option, which ignites a few tracks picked by machine. Also you can engage Autopilot to make tracks drift slowly.

Screenshots from Chrome Web Store