“One day,” young James Brown’s aunt tells him, “everybody gonna know your name.” And so it was. Universal has dropped the first trailer for its biopic on the Godfather of Soul. Chadwick Boseman segues from playing Jackie Robinson in 42 to channeling another American legend in Get On Up. Octavia Spencer plays his Aunt Honey and Viola Davis is his mother in a cast that includes Nelsan Ellis, Lennie James, Tika Sumpter, Jill Scott and Dan Aykroyd. Producers include Brian Grazer and Mick Jagger. The Tate Taylor-helmed pic his the stage, er, screen on August 1: