Halberstadt’s John Cage organ performance adds a note in 2024
On 5 February 2024, a new pipe added a D to the John Cage organ performance in Halberstadt. The modest physical change formed part of a project scheduled to unfold over 639 years.
A score with room for interpretation
John Cage’s ASLSP began as a piano work in 1985. Its notation gives performers unusual freedom over duration and dynamics. Cage later produced an organ version, ORGAN²/ASLSP. The Halberstadt project takes the instruction to play very slowly to an extraordinary scale. Its performance began in 2001 and is planned to end in 2640. That timetable belongs to this particular interpretation; it is not a duration that every performance of Cage’s composition must adopt. The performance opened with a rest; its first sounding notes arrived in 2003, so silence also occupied a substantial place in the timetable.
The change on 5 February
On 5 February 2024, the sound in the Burchardi church acquired an additional D. A new pipe brought the sounding total to seven notes, according to Musikland Sachsen-Anhalt. The previous change had occurred two years earlier. Listeners were therefore gathering for a small alteration in a continuing sound rather than for a conventional recital with a beginning, an interval and a final chord.
An instrument built to continue
The organ’s exposed construction allows individual pipes to be inserted or removed. Weights keep keys depressed while an air supply sustains the sound. The practical work of maintaining the instrument is inseparable from the musical interpretation. A project extending across generations also needs continuing care, money and an organization to keep it going. The John Cage Organ Foundation describes the importance of volunteers, donations and sponsorship to the project’s survival.
Listening on another timescale
A familiar concert often rewards attention to rapid contrasts: a phrase, a solo or a sudden change in volume. Halberstadt shifts attention toward resonance, the surrounding room and the passage of time itself. The scheduled ending in 2640 is an ambition dependent on future stewardship, not a prediction that can be guaranteed. The accompanying illustration interprets the instrument and church setting; it does not document the precise arrangement of people present at the 2024 change.
John Cage, Dream (1948)
Adam Tendler, piano
Tendler’s live 2012 performance of another Cage work offers the same composer’s sustained, spacious listening world. It is not ORGAN²/ASLSP or a recording of the 2024 organ change.
Listen on SoundCloud ↗Follow the evidence.
- Musikland Sachsen-Anhalt: Cage project ↗
- John Cage Organ Art Project ↗
- John Cage Trust: ASLSP ↗
- SoundCloud: John Cage, Dream (1948) ↗
AI-assisted writing, with institutional and primary sources. Illustration is a reconstruction, not an archival photograph. Published November 3, 2026; updated November 3, 2026. Our approach
