Pandora founder Tim Westergren interview by USA TODAY's Jefferson Graham at Pandora headquarters in Oakland. Westergren talks about Pandora's dramatic growth, thanks to the iPhone, the origin of the Music Genome Project, and does a little cameo on the Fender Rhodes, with Graham on Westegren's Fender Strat. On The USA TODAY Talking Tech video show.

Pandora sees huge jump in audience
LAS VEGAS - From where Tim Westergren sits on the 55th floor of the swanky Wynn Las Vegas resort, things are looking pretty cool down on the ground.
His baby, the Pandora personalized online radio service, has more than 125 million registered users, a huge jump from 75 million at the same time last year. Pandora has expanded its reach into the car, with 16 alliances - including new ones with Kia and Acura - compared with four car companies this time last year.
Monthly listening, on average per user, is now at 18 hours, and shares of its stock are up 21% this year.
Coming off a successful $2.6 billion IPO in 2011, Pandora founder Westergren says the company is at the 'tipping point' of expanding beyond the early adopters into a service that he says will one day be utilized by billions of consumers.
'The opportunity for us is global,' says Westergren, interviewed during the International Consumer Electronics Show in a suite stocked with Pandora-enabled devices, such as tablet computers, smartphones and audio receiver.