Fansourcing is a form of Crowdsourcing applied to fans, i.e. when artists mobilize their fan base to produce something.
"the Shins teamed up with user-generated-video upstart Current TV and instructed concert-goers to upload raw material to Current TV’s Web site. Roughly 200 spectators submitted footage, which producers then edited into a five-minute montage of at least one image from nearly every shooter. “With the Internet redefining a band’s success, ideas like this are the future of how music will be perceived – and received,” says Shins keyboardist Marty Crandall. “Audience enthusiasm should be harvested.” (http://www.wired.com/wired/archive/15.01/play.html?pg=3)
See the results at http://www.current.tv/make/vc2/shins
Mention of concept here at http://www.wired.com/wired/archive/15.01/play.html?pg=3