639-Year-Long Organ Concert

The historic St. Burchardi Church in Halberstadt, Germany, is home to an extraordinary musical endeavor: a performance of John Cage's "ORGAN2/ASLSP (As Slow as Possible)" that commenced in 2001 and is projected to continue until the year 2640. This remarkable undertaking stretches the boundaries of musical performance, with individual notes or chords sometimes lasting for years, creating an immersive, multi-generational experience of sound. The project began with a 17-month silence before the first actual notes were heard in February 2003, emphasizing Cage's radical approach to music and the concept of "silence" itself.

John Cage, a renowned American avant-garde composer, music theorist, and philosopher, was known for his experimental compositions that challenged traditional musical forms. His work often explored indeterminacy, where elements of a performance are left to chance or the interpretation of the performer, and he famously questioned the distinction between music and noise. "As Slow as Possible" (ASLSP) was originally composed for piano in 1985, with a typical performance lasting 20 to 70 minutes. However, Cage later adapted it for the organ in 1987, an instrument capable of sustaining notes indefinitely, thus opening the door for the extremely extended duration seen in Halberstadt.

The decision to play the piece for 639 years in Halberstadt was a deliberate choice, marking the time between the construction of the world's first documented permanent organ installation in Halberstadt Cathedral around 1361 and the project's originally proposed start date in 2000. A specially constructed organ in the former St. Burchardi monastery now performs the piece, with sandbags holding down keys to sustain notes for months or even years. Each chord change is a significant event, drawing visitors from around the world to witness these rare shifts in the enduring soundscape, transforming the act of listening into a profound meditation on time, sound, and artistic legacy.