Cibo Matto is really an American based band(or were), but it's made up mainly of two girls from Japan. In their second album they're joined by Sean Lennon, who if you don't know is the son of John and Yoko. They use to make some pretty neat experimental music but they're broken up now and all doing solo projects.
This is a video they did in the 90s that I always thought was way cool
YouTube - Cibo Matto - Sugar Water