cleepr, the music video search engine. That pretty much sums it up to be honest. Pop in a band or musician and see what it comes up with. I'm in a public area at the moment so I can't actually listen to anything (forgot headphones) but I did a few searches and it came up with the goods, so I'm going to presume it sounds ok. However, there doesn't appear to be any way of registering or saving playlists, which is a bit of a shame, so I'll be sticking with Songza as my preferred music engine/jukebox.