See First Sound Change in 7 Years in John Cage's 639-Year-Long Song – Rolling Stone
As Slow as Possible - Wikipedia
A 639-year-long John Cage organ piece had a very rare chord change. And it was... - Classic FM
John Cage Organ Project in Halberstadt
A 639-Year Concert, With No Intermission for Coronavirus - The New York Times
See First Sound Change in 7 Years in John Cage's 639-Year-Long Song – Rolling Stone
A Dangerous and Evil Piano Piece | The New Yorker
World's longest song drones on
What is the longest music in history?
John Cage musical work changes chord for first time in seven years - BBC News
An insanely rare musical moment will happen Saturday. - Alan Cross
As Slow as Possible - Wikipedia
Vexations - The Longest Piano Piece | ThePiano.SG
Longest-ever music performance sees rare chord change in 639-year organ piece – New York Daily News
Slowly does it: chord changes in John Cage's 639-year-long organ piece | Germany | The Guardian
John Cage - Wikipedia
John Cage – As Slow as Possible | pietmondriaan.com
Curious Fact of the Week: The Slowest Song - Atlas Obscura
Eigenbros on Twitter: "@johncarlosbaez If memory serves correctly, this is the longest music piece ever written. John cage has a bunch of experimental pieces like this, including the popular 4'33" which is
As Slow As Possible, une pièce de John Cage qui ne s'achèvera qu'en 2640 - rtbf.be
A 639-year-long John Cage organ piece had a very rare chord change. And it was... - Classic FM
John Cage Organ Project in Halberstadt
639-year-long organ piece changes chord – DW – 09/05/2020
