  metal machine music, subtitled *the amine Î² ring, is the fifth solo album by american rock musician lou reed. it was originally released as a double album by rca records in 1975. a departure from the rest of reed's catalog, metal machine music is considered to be a joke, a grudging fulfillment of a contractual obligation, or an early example of noise music. the album features no songs or even recognizably structured compositions, eschewing melody and rhythm for an hour of modulated feedback and guitar effects, mixed at varying speeds by reed. in the album's liner notes he claimed to have invented heavy metal and asserted that metal machine music was the ultimate conclusion of that genre. the album cost reed credibility in the music industry while simultaneously opening the door for his later, more experimental material. historically, metal machine music is 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. that same year, reed announced his plans to re-release metal machine music in remastered form. ==style==  according to reed (despite the original liner notes), the album entirely consists of guitar feedback played at different speeds. the two guitars were tuned in unusual ways and played with different reverb levels. he would then place the guitars in front of their amplifiers, and the feedback from the very large amps would vibrate the stringsâ
1975_albums Albums_produced_by_Lou_Reed Buddah_Records_albums Instrumental_albums Lou_Reed_albums Noise_music RCA_Records_albums