The Longest Musical Performance Will Last 639 Years

How slow is "as slow as possible"? This was the question posed by avant-garde composer John Cage with his composition ORGAN²/ASLSP. In a former church in Halberstadt, Germany, a group of musicians and philosophers took this instruction to its ultimate conclusion. They constructed a special, custom-built organ designed to play the piece over the course of centuries. The performance began not with a sound, but with 17 months of silence, finally producing its first sustained chord in 2003. Because an organ can hold a note as long as its bellows receive air, it is uniquely suited for this monumental task.

The project's seemingly arbitrary 639-year duration is a direct tribute to the town's musical history. Halberstadt was home to the Blockwerk organ, a revolutionary instrument built in 1361 that was among the first to feature a modern chromatic keyboard layout. The project's length was calculated by subtracting that date from the project's conception year of 2000, creating a profound link between a historical innovation and this futuristic musical endeavor.

The performance is a meditation on time itself. Notes are held for months or even years, with sandbags weighing down the organ's pedals. The rare chord changes have become unique cultural pilgrimages, drawing visitors from around the world to witness a fleeting moment in a vast musical timeline. The project relies entirely on the commitment and funding of future generations to see it through to its scheduled finale in the year 2640, making it one of the most ambitious and long-term artistic works ever conceived.