John Cage’s 639-Year Organ Work Adds an Eighth Pipe

On 5 August, listeners inside Halberstadt’s St Burchardi church heard a seven-note chord for three minutes. A new pipe was then fitted to the small purpose-built organ. After another three minutes of listening, the resulting eight-note chord was left to sound without a player. It was the seventeenth chord change in John Cage’s ORGAN²/ASLSP since the performance began in 2001.

Cage did not prescribe a 639-year duration. He wrote the piece for piano in 1985 and adapted it for organ in 1987, leaving the title As Slow as Possible as an open instruction. The Halberstadt project turned that instruction into a calendar, linking its scale to a historic organ built in the city in 1361 and a planned start in 2000. The present performance began on 5 September 2001 and is scheduled to end on 4 September 2640.

No organist holds these notes at a keyboard. An electric blower supplies air continuously, while volunteers alter the harmony by adding or removing pipes. The first seventeen months of the performance were silent; its first sound arrived in February 2003. A month is the score’s smallest unit in this reading, and individual sounds or silences can last for years.

The added pipe introduced a higher A to the seven existing notes. Jeffrey Lependorf, executive director of the John Cage Trust, described the difference with suitable restraint: “There’s a higher sound that’s a little more prominent.” The change is slight, but it cannot be replayed on request. Once the old configuration has been dismantled, that part of the performance belongs to memory and recordings.

The church is not a neutral container for the instrument. Lependorf noted that moving only a few inches can make the same chord sound markedly different. With no finger shaping a note at the keyboard, articulation moves elsewhere: into the pipe combination, uninterrupted wind, stone interior and listener’s position. The music changes rarely, while one step can still change the act of hearing it.

The next scheduled action falls on 5 October 2027, when E4 will be removed from the chord. Reaching 2640 will require people who do not yet exist to preserve the blower, pipes, building and calendar. Halberstadt has therefore made Cage’s instruction about slowness more than a question of tempo. It has distributed responsibility for one performance across generations.