Normally when we hear the term "mixtape," we automatically think about a musical one. However, for the upcoming film, The Black Power Mixtape 1967-1975, the term applies to the mix of previously unreleased of footage documenting the Black Power Movement and its participants. It also gives new meaning to the phrase, "digging in the crates," since the forgotten footage was unearthed in the basement of a Swedish TV station. Featuring interviews with the movement's pioneers such as Huey P. Newton, Angela Davis, Stokely Carmichael, Kathleen Cleaver, and Bobby Seale, the film will also feature commentary from the likes of Sonia Sanchez, Erykah Badu, Talib Kweli, Harry Belafonte, and more. The Roots' Questlove also lends his commentary to the film, while teaming up with Sa-Ra's Om'Mas Keith for the movie's score. Set to premiere in New York City September 9th, Sundance Selects will debut the movie nationwide on September 23th. For more information and to find out when The Black Power Mixtape 1967-1975 will make its way to a city near you, visit the official website.