"Just Stand Up!" is a song featuring the vocals of an all-star group of pop/RB/rock performers, including Mariah Carey, Beyonc, Mary J. Blige, Rihanna, Fergie, Sheryl Crow, NICOLE SCHERZINGER, Natasha Bedingfield, Miley Cyrus, Leona Lewis, Carrie Underwood, Keyshia Cole, LeAnn Rimes, Ashanti and Ciara. American song-writer and producer Antonio "L.A