Editing Density 21.5 (section)

==Recordings==
George Perle{{sfn|Perle|1990|loc={{Page needed|date=December 2018}}}} and [[Marc Wilkinson]]{{sfn|Wilkinson|1957|loc={{Page needed|date=December 2018}}}}, in writing, and [[Harvey Sollberger]], in recording, all interpret the fourth note in bar twenty-three as a B natural.

The piece has been recorded and released on:
* Members of the [[Columbia Symphony Orchestra]], directed by [[Robert Craft]] – ''Varèse: Density 21.5, Hyperprism, Intégrales, Ionisation, Octandre, Poème Electronique'' (1959) CBS Masterworks – CBS 60286.
* Severino Gazelloni, flute (1967) [[WERGO]] WER 60029, Series: Große Interpreten neuer Musik.
* Ensemble Instrumental de Musique Contemporaine de Paris, directed by Konstantin Simonovitch – ''Varese: Deserts / Hyperprism / Integrales / Density 21.5'' (1971) La Voix De Son Maître 2 C 061-10875 Y.
*''Edgard Varèse: The Complete Works'' (1994/1998). Performed by [[Jacques Zoon]]. Decca London Polygram 289 460 208–2. Assistance and advised from Professor [[Chou Wen-chung]], who worked closely with Varèse.
*[[Harvey Sollberger]]{{citation needed|date=August 2021}}
*Philippe Bernold, [[Alexandre Tharaud]], ''The Solo Flute in the 20th Century'' (2008), Harmonia Mundi Musique d'Abord HMA1951710
*[[Claire Chase]], Density (2013) New Focus Recordings{{sfn|Walls|2013}}