within the Theatre of Eternal Music that he founded in 1962. The Theatre of Eternal Music is a multi-media performance group who, in its 1960s–1970s heyday included at various times La Monte Young, Marian Zazeela, Tony Conrad, Angus MacLise, Terry Jennings, John Cale, Billy Name, Jon Hassell, Alex Dea and others, each from various backgrounds (classical composition and performance, painting, mathematics, poetry, jazz, etc.). Operating from the world of lofts and galleries in New York in the mid-sixties to the mid-seventies in particular, and tied to the aesthetics of Fluxus and the post-John Cage-continuum, the group gave performances on the East Coast of the United States as well as in Western Europe. These performances comprised long periods of sensory inundation with combinations of harmonic relationships, which moved slowly from one to the next by means of "laws" laid out by Young regarding "allowable" sequences and simultaneities, perhaps in imitation of Hindustani classical music which he, Zazeela and the others either studied or at least admired. The group released nothing during their lifetime (although Young and Zazeela issued a collaborative LP in 1969, and Young contributed in 1970 one side of a flexi-disc accompanying Aspen magazine). The concerts themselves were influential on their own upon the art world including Karlheinz Stockhausen (whose Stimmung bears their influence most strikingly) and the drone-based minimalist works of dozens of other composers many of whom made parallel innovations including Young classmate Pauline Oliveros, or Eliane Radigue, Charlemagne Palestine, Yoshi Wada, Phill Niblock and many others. In 2000, La Monte Young wrote: "[About] the style of music that I originated, I believe that the sustained tone branch of minimalism, also known as 'drone music', is a fertile area for exploration." Drone in rock music Theatre of Eternal Music member John Cale extended and popularized drone techniques in 1960s rock music with his next band, the Velvet Underground (along with songwriter Lou Reed). The Velvet Underground's first EP release in 1966, entitled Loop, was an experimental drone piece created by member John Cale. This rare release was far removed from the band's usual rock-based music, and its use of drone elements in songs was particularly apparent in the song "Heroin", which consisted of Cale's grinding viola drone with Reed's two-chord guitar figure. This song, appearing on the band's first album The Velvet Underground & Nico (1967), laid the foundation for drone music as a rock music genre