You clearly need to focus on a more algorithmic approach as the results you're returning are in no way better than a completely random selection from the same genre
http://theperceptron.com/recommendation/artist/the+rolling+s...
http://theperceptron.com/recommendation/artist/the+rolling+s...
I'm working real hard on the algorithm right now to get the cream floating to the top sooner, and people's comments on HN have been really helpful.
Thanks very much.