AllMusic!

We're on a mission to build the biggest and most comprehensive music database and marketplace. Imagine a site with discographies of all labels, all artists, all cross-referenced, and an international marketplace built off of that database. It's for the love of music, and getting closer every day

Wilt.fm is a free and open source alternative to CBS' Last.fm.

a new music discovery service that lets you find artists through tag search and create playlists by dragging and dropping songs from the comfort of your browser. Once you've created a mix from the site's rolling fields of music, you can share it via Facebook and Twitter to show the world just how indie you are.

Find music videos, internet radio, music downloads and all the latest music news and information on Yahoo! Music