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From SOHH.com:

Sparks will also release Don't Call It A Comeback, the first artist mixtape of Diddy's career. In addition to cuts from Press Play, the CD will feature new songs produced by Sparks as well as guest spots by Bad Boy's roster. Jim Jones, The Clipse, Busta Rhymes, Fat Joe, Snoop Dogg, Ludacris and others will also land verses to the CD.

Via Torontosfynest at BadBoyForever.com.