Since taking the helm in 2013, Riley has brought the global music-recognition app to profitability. "Last year we crossed our 1 billionth download and people Shazamed over 7 billion times," says the 1996 graduate of The Wharton School, and users can now Shazam within Snapchat. Next up: greater integration at live music events and summer Fox game show Beat Shazam from Mark Burnett. Jamie Foxx will host.
Business Leader He Admires: "Warren Buffett. He's the master of the game."