17th Klangwechsel (Note Change) for Organ2/ASLSP, St. Buchardi Church, Halberstadt, Germany on 5th August 2026 – by Jason Gessner

“John Cage’s Organ2/ASLSP composition is being performed on a custom built organ for 639 years at St. Buchardi Church in Halberstadt, Germany. Hundreds of people from all around the world packed into the small church for the ceremonial note change – the addition of an A pipe. In this recording, the note changes at ~1:50. This chord will ring out until the next change on October 5, 2027.”