MASHABLE -- Apr 2 -- MySpace will unveil a music joint venture with at least three major music companies within 5 days. The service, which would feature MP3 downloads, concert tickets, ringtones, and artist-related merchandise, could be a huge revenue source for MySpace.  What's new in today's report is that Universal Music Group has supposedly signed onto the venture, leaving EMI as the only major record label not rumored to be a part of MySpace Music.

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