There are many sites out there to search for music but one new one deserves your attention.
It's UpTo11.net and it's a music lover's tool for finding music that you might not know that you like.
UpTo11.net is doing a few cool new things including: analyzing p2p network music collections to see pattterns in music ownership, using wikipedia data on music artists, and other cool features. From their about page:
In order to unlock the potential of your fellow fans to help you find music, we've analyzed the collections of over a quarter million music collections (more every day) from the P2P networks. As you can imagine, this represents a vast amount of variety of musical tastes and, up until now, an untapped resource. Using some proprietary algorithms (i.e some math we made up), we've been able to find patterns in the way people collect music. And perhaps not surprisingly, we have found that people generally collect artists in a few genres, and fans that collect in the same genre generally have overlapping musical tastes. What is fascinating though is that not every user has every band from any one genre in their collection. And it is these areas of difference that make for the best recommendations.
Also, Seb Paquet mentions upto11.net's popularity slider on Corante's Many-to-Many.
Please give upto11.net a try and let them and others know what you think.