Pandora.com streams music based around whatever band you want. For example, I typed in “Modest Mouse” and it then created a playlist of music Pandora thinks is similiar to Modest Mouse. I’ve heard 4 songs so far by Modest Mouse, Pavement, Divine Right, and Bush. Not bad. The only bad thing is that you can’t preview the list it creates. So i guess it’s similiar to radio in that regard.