Spotify is a service where you can stream almost any music, for free (with ads) or using a premium account. Remember that track, album and artist availability may vary from country to country. Spotify is also not available everywhere.
General commercial playlist
Collaborative playlist – add your own suggestions here
Last FM is a radio service where you can tune in to either your own music collection or listen to playlists connected to bands or genres. All Radio Rivendell's music is scrobbled and you can tune in to our own radio here.