The new music site listenmusic.fm offers music discovery to find new music and is a social network to exchange self created playlists. By an search interface one may access particular tracks or playlists by artists, titles and moods. The playlists available are created by members, which are able to create own playlists or collaborate with others by adding tracks to already existing music playlists. Various top lists at the bottom of the site are offering some insights into the occurences at listenmusic.fm.
Similar services are available at music sharing.