YouTube's Auto-Tune celebs take on karaoke By: CNBC.com News November 26, 2014 at 10:22 AM EST Evan Gregory, of Auto-Tune the News fame, is blowing up on a mobile app called Sing! Karaoke, by luring singers to perform duets with him. Read More >> Related Stocks: Apple Google, Inc. International Business Machines Pandora Media Inc