John Cale in the context of "Lou Reed"

La Monte Thornton Young (born October 14, 1935) is an American composer, musician, and performance artist recognized as one of the first American minimalist composers and a central figure in post-war avant-garde music. He is best known for his exploration of sustained tones, beginning with his 1958 composition Trio for Strings. His compositions have called into question the nature and definition of music, most prominently in the text scores of his Compositions 1960. While few of his recordings remain in print, his work has inspired prominent musicians across various genres, including avant-garde, rock, and ambient music.

Young played jazz saxophone and studied composition in California during the 1950s, and subsequently moved to New York in 1960, where he was a central figure in the downtown music and Fluxus art scenes. He then became known for his pioneering work in drone music (originally called dream music) with his Theatre of Eternal Music collective, alongside collaborators such as Tony Conrad, John Cale, and his wife, the multimedia artist Marian Zazeela. In 1964, he began work on his unfinished improvisatory composition The Well-Tuned Piano, iterations of which he has performed throughout subsequent decades.

The Velvet Underground was an American rock band formed in New York City in 1964. The New York Times wrote that the Velvet Underground was "arguably the most influential American rock band of our time". Though their integration of rock and the avant-garde earned them little commercial success during their initial nine-year run, they are now widely regarded as one of the most influential bands in rock music, as well as underground, experimental, and alternative music. Their provocative subject matter and experimentation were instrumental in the development of punk rock, new wave and other genres.

The group performed under several names before settling on the Velvet Underground in 1965, taken from the title of a 1963 book on atypical sexual behavior. Its classic lineup consisted of singer and guitarist Lou Reed, Welsh multi-instrumentalist John Cale, guitarist Sterling Morrison, and percussionist Moe Tucker. In 1966, pop artist Andy Warhol became their official manager. They served as the house band at Warhol's studio, The Factory, and performed with his traveling multimedia show, Exploding Plastic Inevitable, from 1966 to 1967. Their debut album, The Velvet Underground & Nico, featuring the German singer and model Nico, was released in 1967 to critical indifference and poor sales, although it has since been hailed as one of the greatest albums in music history.

The Theatre of Eternal Music (later sometimes called The Dream Syndicate) was an avant-garde musical group formed by La Monte Young in New York City in 1962. The first group (1962–1964) of performers consisted of La Monte Young, Marian Zazeela, Angus MacLise, and Billy Name. From 1964 to 1966, it consisted of La Monte Young (voice, saxophone), Marian Zazeela (voice, lighting), John Cale (viola), and Tony Conrad (violin), with sometimes also Terry Riley (voice). Since 1966, Theatre of Eternal Music has seen many permutations and has included Garrett List, Jon Gibson, Jon Hassell, Rhys Chatham, Alex Dea, Terry Jennings, and many others, including some members of the various 1960s groups. The group's self-described "dream music" explored drones and pure harmonic intervals, employing sustained tones and electric amplification in lengthy, all-night performances.

Archival recordings of the group's influential mid-1960s performances remain in La Monte Young's archive. None have ever seen official release following a dispute over compositional credit between Young and the pair of Conrad and Cale. Nonetheless, a 1965 bootleg recording removed from the archive by Young's first archivist, Arnold Dreyblatt, was controversially released in 2000 by Table of the Elements in CD as Day of Niagara. Other bootlegs of Theatre of Eternal Music have appeared online via file-sharing sites.

Anthony Schmalz Conrad (March 7, 1940 – April 9, 2016) was an American video artist, experimental filmmaker, musician, composer, sound artist, teacher, and writer. Active in a variety of media since the early 1960s, he was a pioneer of both drone music and structural film. As a musician, he was an important figure in the New York minimalist scene of the 1960s, during which time he performed as part of the Theatre of Eternal Music (along with John Cale, La Monte Young, Marian Zazeela, Terry Riley, and others). He became recognized as a filmmaker for his 1966 film The Flicker. He performed and collaborated with a wide range of artists over the course of his career.