Editing Ambient music (section)

===Drone music===
{{main|Drone music}}
Drone music is a [[minimal music|minimalist]]<ref name="coxwarner.301"/> genre of music that emphasizes the use of [[sustain]]ed sounds,<ref>{{cite encyclopedia|url=https://www.britannica.com/art/drone-music|encyclopedia=britannica.com|title=Drone}}</ref> notes, or [[tone cluster]]s called ''[[drone (music)|drone]]s''. It is typically characterized by lengthy compositions featuring relatively slight harmonic variations. [[La Monte Young]], one of its 1960s originators, defined it in 2000 as "the sustained<!--no hyphen in quote--> tone branch of minimalism."<ref name=young2000>Young 2000, p. 27</ref> Elements of drone music have been incorporated in diverse genres such as [[Rock music|rock]], ambient, and [[electronic music]].<ref>{{cite web|last1=Echo|first1=Altstadt|title=Drone Techno Introduction|url=http://dubmonitor.com/drone-techno-an-introduction/|website=www.dubmonitor.com|publisher=Dub Monitor|access-date=18 February 2015|archive-date=18 February 2015|archive-url=https://web.archive.org/web/20150218220923/http://dubmonitor.com/drone-techno-an-introduction/|url-status=dead}}</ref><ref>"Drone-based music" is used for instance in 1995 (Paul Griffiths, ''Modern music and after: Directions Since 1945'', Oxford University Press, 1995, {{ISBN|0-19-816511-0}}, p. [https://books.google.com/books?id=OYQy92PzNgYC&pg=PA209 209]: "Young founded his own performing group, the Theatre of Eternal Music, to give performances of highly repetitive, drone-based music"), or in Cow & Warner 2004 (cf. cited quote of p. 301).</ref><ref name="coxwarner.301">Cox & Warner 2004, p. [https://books.google.com/books?id=FgDgCOSHPysC&pg=PA301 301] (in "Thankless Attempts at a Definition of Minimalism" by [[Kyle Gann]]): "Certainly many of the most famous minimalist pieces relied on a motoric 8th-note beat, although there were also several composers like Young and Niblock interested in drones with no beat at all. [...] Perhaps “steady-beat-minimalism” is a criterion that could divide the minimalist repertoire into two mutually exclusive bodies of music, pulse-based music versus drone-based music."</ref>