Metal Machine Music

Metal Machine Music (subtitled *The Amine β Ring) is the fifth studio album by American rock musician Lou Reed, released as a double album in July 1975 by RCA Records. A departure from the rest of his catalog, the album features no songs or even recognizably structured compositions, eschewing melody and rhythm for modulated feedback and guitar effects, mixed at varying speeds by Reed. In the album's liner notes, Reed claimed to have invented heavy metal, and asserted that Metal Machine Music was the ultimate conclusion of the genre.
The album cost Reed credibility in the music industry while simultaneously opening the door for some of his later, more experimental material. Although reviewed negatively by critics since its release, Metal Machine Music is today considered a forerunner of industrial music, noise rock, and contemporary sound art. In 2010, Reed, Ulrich Krieger, and Sarth Calhoun collaborated to tour playing free improvisation inspired by the album as Metal Machine Trio. In 2011, Reed re-released a remaster of Metal Machine Music.