AllMusic - AllMusic.
Mp3Bear - Mp3Bear is an Mp3 music search engine that locates the mp3 files all over the net.
MP3Juices - MP3Juices is a free mp3 search engine and tool that allows you to download unlimited mp3 files anywhere around the world.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
MP3Clan - MP3Clan is a popular web-based application that allows you to enjoy and download unlimited audio songs anytime anywhere.
yt2mp3.org - Free online YouTube to MP3 Converter