Trawlin' for hits

I was watching Nightline last night and saw a piece concerning a site that showcases bands both old and new alike for exposure before selling their material (ranging from just the songs to studio recordings and the likes). I was surprised to see (and remember) people and acts like Beth Hart and 'Earth, Wind and Fire' still working up and about, but I completely forgot what the site was.
It seemed a novel way to garner interst though and it was interesting to see how some rather old acts caught onto something which until last night i'd never heard about.