A New Take on RadioA musically inclined entrepreneur thinks outside the box.

As a musician, Tim Westergren marched to his own beat. Now, as an entrepreneur, he's creating a beat that others are rushing to follow. As founder of Pandora, a personalized internet radio service based in Oakland, California, Westergren, 43, has struck a chord that resonates with its more than 15 million registered users and expects to bring in nearly $25 million this year.

Atpandora.com, users create their own internet radio stations by simply selecting a song or artist. Pandora then studies approximately 400 musical attributes of each user's favorite music and automatically creates an ongoing playlist of other music featuring the same qualities.