R&B singers Beyonce, Mary J. Blige, Mariah Carey, Keyshia Cole, Ciara, Rihanna and Ashanti are among a group of female stars who have teamed for âJust Stand Up,â an exclusive track recorded for the âStand Up To Cancerâ Foundation. According to Billboard âJust Stand up,â due for release September 2nd, will feature 15 of the hottest female singers including Mariah Carey, Beyonce, Mary J. Blige, Rihanna, Fergie, Sheryl Crow, Miley Cyrus, Melissa Etheridge, Ashanti, Natasha Bedingfield, Keyshia Cole, Ciara, Leona Lewis, LeAnn Rimes and Carrie Underwood. All sales of the star-studded single will benefit cancer research. The charity tune was conceived by Antonio “L.A.” Reid, who produced it with longtime creative colleague Kenny “Babyface” Edmonds. All 15 singers will share the stage to perform the song live on Sept. 5 during the “Stand Up to Cancer” television special, set to air simultaneously on ABC, NBC and CBS. Other stars expected to turn out for the hour-long fund- and awareness-raising program include Jennifer Aniston, Lance Armstrong, Katie Couric, Sally Field, Salma Hayek, Meryl Streep, Forest Whitaker and Reese Witherspoon. Founded in 2007, Stand Up to Cancer is a program of the Entertainment Industry Foundation that calls on entertainment-industry people and platforms to help fight cancer. “Just Stand Up” hits airwaves and iTunes September 2nd.