Just to let you know, Please note that for Spotify to have music on their servers; they require the permissions from the record label. The chances are that the record label have not given the permissions to Spotify, which means that Spotify can't have the music yet. Spotify make everything they have available to us, so hopefully it will appear soon!
You can also check out the Music FAQ which has some more information, and point 5 to request music to be added.
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