Spotify is the new kid on the online music block, offering not only streaming music like Pandora, but searchable music and the ability to create and share playlists.

"Our goal is to have all the world's music -- all the African music, all the South American music, all the Asian music,"Spotify founder Daniel Ek was quoted on CNN.” Asked what percentage of the world's recorded music is in Spotify's database, Ek estimated, ‘probably closer to 80% than 20%.’”

It's hard to be sure how accurate that estimate is. The problem with Spotify is they are forced to work with record labels, not with music fans and artists. I’m not aware of a way for fans or independent artists to upload music directly to Spotify.

While more mainstream groups such as Wild Nothing and MC Chris can be found on Spotify, omissions include SXSW alums Das Racist and Japanese female rockers GO!GO!7188. Even international acts with millions of views on YouTube such as The Pillows and Sakanaction are nowhere to be found.

Come to think of it, YouTube has a larger selection of underground and international music than Spotify. YouTube allows indie musicians, bands, and (if the label doesn't complain) music fans to upload music and videos.

The internet has created a vast ecosystem of music creation and consumption. New ideas spring up (Napster, MP3.com) and wither. Others change the system, such as iTunes. The internet has allowed people to discover new music like never before. There are websites and internet radio stations dedicated to just about any genre or language of music.

One such example is Japan-a-radio. For more than ten years Japan-a-radio has streamed Japanese anime and pop music targeted at North American listeners. The listener-funded station has found a sustainable niche in the long tail of online music.

While Spotify will appeal to lovers of mainstream music, websites and blogs focusing on small music niches need not worry. The long tail is long, and Spotify comes up short.

Read Jim Mitchem's more detailed review of Spotify: Spotify is a Pretty Girl with Bad Breath