After reading this review of the app Aweditorium I was curious to see what was really going on. The interface looked interesting and I've never been sold on any "Music Discovery" service, so it seemed like it was worth a try. Turns out, it's The Sixty One as an iPad app. This is both good and bad. It's bad because there are notes popping up over your song all the time and there are icons that do things but it's not clear, at all, what you're doing when you click on something. It's good because they actually have a good repository of music and the overall interface is much more suited for iPad than the web... you just need to stumble upon a good string of artists all together.