Wikipedia
Smule
Smule is an American mobile app developer headquartered in San Francisco. The company specializes in developing social music-making applications for iOS, Android, and Amazon.com Kindle Fire.
The company was founded in 2008 by Jeff Smith and Stanford assistant professor Ge Wang. Wang commented that the goal of the apps was to draw users in and "by the time they realize they're making music, 'it's too late — they're already having fun.'" In December 2011, Smule acquired fellow music app developer Khush. On July 31, 2013, Wang stepped down from his role at Smule to return to Stanford full-time.