Discover the new documentary that follows the extraordinary life and six-decade career of Grammy-winning keyboardist Billy Preston, whose signature sound shaped the work of The Beatles, Ray Charles, Mahalia Jackson, Aretha Franklin, The Rolling Stones, Barbra Streisand, Sly Stone, Eric Clapton, and countless others. Preston also generated his own No. 1 hits, including "Outa-Space," "Nothing from Nothing," and "You Are So Beautiful."