This is a way for artists to communicate directly to their fans. If you think of an artist like Bruno Mars, he's using Spotify, creating playlists and listening to music through it.

With Twitter and other social networking tools, you can get a lot of advice from great people. I learn more from Twitter than any survey or discussion with a big company.

In general, people are comfortable sharing their music. There are two exceptions, though - Lady Gaga and Britney Spears.

The main reason people want to pay for Spotify is really portability. People are saying, 'I want to have my music with me.'

In order for a service to be social, you've really got to start from the ground up. The fact that almost a third of the U.S. population have even heard of Spotify is really because they've seen it on Facebook and friends have been sharing.

At the end of the day, I want the music industry to be larger than what it is today.

With Spotify, people don't get it until they try it. Then they tell their friends.