Music fans will be moved to hear the stories of those in the background for some of their favorite acts in "Twenty Feet From Stardom." Selected as this year's opening night film at Sundance, the documentary features interviews with a string of backup vocalists, as well as the famous faces they've shared the stage with.

From Darlene Love who sang back up vocals for acts like Lynyrd Skynyrd, Carole King and Mick Jagger to Judith Hill who is currently featured on NBC's "The Voice" and was selected as a backup for Michael Jackson's tour prior to his death, "Twenty Feet From Stardom" features the powerhouse voices of the past and today alike. Ahead of its release on June 14, check out the just-released trailer below.