As Slow as Possible note change, John Cage. Impulse 15; 2020

The note change on September 5th, 2020. This change is Impulse # 15 in John Cage’s “As Slow as Possible” aka “ASLSP.” Beginning in 2001, the work is set to conclude in 620 years in the year 2640. This performance is on an organ that resides in The Saint Burchardi Church in Halberstadt, Germany.