Beyonce, Mary J. Blige, Mariah Carey, Keyshia Cole and Ashanti will join a host of talented and successful songbirds when they all join forces on the 'Just Stand Up' track, created to benefit cancer research.

The track, which was produced by Antonio "L.A." Reid and Kenneth "Babyface" Edmonds, will feature some of the biggest names in R&B, country and pop, including teen sensation Miley Cyrus and Leona Lewis, and hits radio and iTunes on Sept. 2. All 15 of the divas featured on the song will take the stage to perform it at the "Stand Up to Cancer" television special, airing Sept. 5 on ABC, NBC and CBS.

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