Editing Density 21.5 (section)

==Notes and references==
'''Notes'''
{{notelist}}
'''References'''
{{Reflist|15em}}
'''Sources'''
* {{cite news|author=Anon.|date=May 6, 1941|url=https://news.google.com/newspapers?nid=1499&dat=19410506&id=IHYxAAAAIBAJ&sjid=zCIEAAAAIBAJ&pg=1195,2993338|title=Platinum Flute at $3,750 Best, Barrere Finds|newspaper=[[The Milwaukee Journal]]|access-date=December 14, 2018}}{{Dead link|date=January 2024 |bot=InternetArchiveBot |fix-attempted=yes }}
* {{wikicite|ref={{harvid|Anon.|2018}}|reference=Anon (2018). "[https://www.nyfluteclub.org/about/history-and-archives/past-presidents/1944/12/Georges-Barrre/ Georges Barrère: NYFC President 1920–1944]" The New York Flute Club, Inc. website (accessed December 14, 2018).}}
* {{cite AV media notes|first=Wen-chung|last=Chou|year=1994|title=Edgard Varèse: The Complete Works|others=Jacques Zoon|publisher=Decca London Polygram|id=289 460 208–2}}
* {{wikicite|ref={{harvid|Hickey}}|reference={{AllMusic|last=Hickey|first=Sean|class=composition|id=mc0002358008|title=Edgard Varèse: ''Density 21.5'', for Flute Solo"}}}}
* {{cite journal|first=Timothy|last=Kloth|year=1991|title=Structural Hierarchy in Two Works of Edgard Varèse: ''Écuatorial'' and ''Density 21.5''|journal=Contemporary Music Forum|volume=3}}
* {{cite book|last=Perle|first=George|author-link=George Perle|year=1990|title=The Listening Composer|publisher=University of California Press|isbn=0-520-06991-9}}
* {{wikicite|ref={{harvid|Walls|2013}}|reference=Walls, Seth Colter (2013). "[https://www.wqxr.org/story/claire-chase-displays-breath-breadth-density/ Flutist Claire Chase Has Breath and Breadth in Density".] Q2 Music Featured Album: [[WQXR-FM|WQXR]] website (October 14; accessed December 14, 2018).}}
* {{cite journal|last=Wilkinson|first=Marc|title=An Introduction to the Music of Edgard Varèse|journal=The Score and I.M.A. Magazine|volume=19|year=1957|issue=17}}