Drone music is a minimalist musical style that emphasizes the use of sustained or repeated sounds, notes, or tone-clusters – called drones. It is typically characterized by lengthy audio programs with relatively slight harmonic variations throughout each piece compared to other musics. La Monte Young, one of its 1960s originators, defined it in 2000 as "the sustained tone branch of minimalism".
Drone music is also known as drone-based music, drone ambient or ambient drone, dronescape or the modern alias dronology, and often simply as drone.
Explorers of drone music since the 1960s have included Theater of Eternal Music (aka The Dream Syndicate: La Monte Young, Marian Zazeela, Tony Conrad, Angus Maclise, John Cale, et al.), Charlemagne Palestine, Eliane Radigue, Philip Glass, Kraftwerk, Klaus Schulze, Tangerine Dream, Sonic Youth, The Velvet Underground, Robert Fripp & Brian Eno, Steven Wilson, Kyle Bobby Dunn, Robert Rich, Steve Roach, Earth, Rhys Chatham, Coil, If Thousands, John Cage, Labradford, Lawrence Chandler, Stars of the Lid, Sonic Boom, Phill Niblock, Sheila Chandra, Hwyl Nofio, Janek Schaefer and Sunn O))).