As Slow as Possible

Found this at PRX Youthcast blog; quoting Kiera Feldman:
“‘As Slow As Possible’ by John Cage is my new favorite song. It takes 639 years to play. This is what it currently sounds like:”

“(Feel free to listen at your convenience–the next note won’t be added to the song until July 5, 2008). ‘As Slow As Possible’ is scheduled to conclude September 5, 2640.”

Kiera asks, if she played it at a party, “would you dance?” The piece is known as ORGAN 2/ASLSP (“as slowly and softly as possible”, reads Cage’s score).