Slow build: The longest musical composition in the world changes chord

EuroNews · 🇫🇷 public France · Aug 05, 2026 · 428 words · By David Mouriquand

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What to know about Avant-Garde Art

The glacially paced composition has been going for nearly 25 years and today, a new note is introduced to the John Cage Organ Project Halberstadt...

Claims checked 10

Techniques found 2

Topics 2

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center100%

Right0%

2 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

The glacially paced composition has been going for nearly 25 years and today, a new note is introduced to the John Cage Organ Project Halberstadt...

Why it matters

Certain artists love to defy standard 2-hour runtimes when it comes to concerts, with the likes of Bruce Springsteen and The Cure known for their lengthy and bladder-punishing setlists.

Common ground

However, none can compete with an organ in Germany, which is playing one composition in essentially the world's slowest concert - one which will outlive us all.

Perspective signals

The tension in the story is sharpened by Loaded Language, Exaggeration / Hyperbole: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Follow-up questions

What new context would change how readers understand this Avant-Garde Art story?
What evidence would most clearly confirm or weaken the claim that an electric-powered blower system sends wind into the organ to create a continuous sound?
How does this story connect Avant-Garde Art with Musical Performance over the next few days?

open_in_new Read the original article: https://www.euronews.com/culture/2026/08/05/the-longest-musical-composition-in-t…

psychologyPropaganda Techniques Detected

eFinder identified 2 propaganda techniques in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning

Loaded Language 80% confidence

Using words with strong emotional connotations to influence an audience.

Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.

Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

warning

Exaggeration / Hyperbole 70% confidence

Overstating facts or claims to create a stronger emotional response.

Why it matters: Recognizing exaggeration / hyperbole helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 5

help Insufficient Evidence 2

verified Verified 1

verified Verified By Reference 1

info Single Source 1

verified

Claim 1: “an electric-powered blower system sends wind into the organ to create a continuous sound.”

VERIFIED

General knowledge of pipe organs (confirmed by Wikipedia) and specific mentions of 'bellows' in the WBN News Global article support the use of a blower system to maintain continuous sound for this specific installation.

travel_explore

web search NEUTRAL — In music, the organ is a keyboard instrument of one or more pipe divisions or other means (generally woodwind or electric) for producing tones. The organs have usually two or three, sometimes up to fi…
https://en.wikipedia.org/wiki/Organ_(music)

travel_explore

web search NEUTRAL — Organ (biology) ... In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. [1] In the hierarchy of life, an organ lies between tissue …
https://en.wikipedia.org/wiki/Organ_(biology)

travel_explore

web search NEUTRAL — The pipe organ is a musical instrument that produces sound by driving pressurised air through the organ pipes selected from a keyboard. Because each pipe produces a single tone and pitch, the pipes ar…
https://en.wikipedia.org/wiki/Pipe_organ

help

Claim 2: “the next chord change is set to take place on 5 October 2027 with the release of the E4 sound – previously added on 5 September 2020.”

INSUFFICIENT EVIDENCE

No evidence was found in the provided search results regarding a chord change on October 5, 2027, or the E4 sound specifically.

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Claim 3: “Originally written for piano in 1985, Cage adapted the piece in an arrangement for organ before he died in 1992.”

CORROBORATED

Wikipedia and Euronews both confirm the piece was written for piano in 1985 and adapted for organ in 1987, before Cage's death in 1992.

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wikipedia NEUTRAL — Organ²/ASLSP (As Slow as Possible) is a musical piece by John Cage and the subject of the second-longest-lasting (after Longplayer) musical performance yet undertaken. Cage wrote it in 1987 for organ,…
https://en.wikipedia.org/wiki/As_Slow_as_Possible

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wikipedia NEUTRAL — John Milton Cage Jr. (September 5, 1912 – August 12, 1992) was an American composer, artist, and music theorist. A pioneer of indeterminacy in music, electroacoustic music, and non-standard use of mus…
https://en.wikipedia.org/wiki/John_Cage

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wikipedia NEUTRAL — Nicolas Cage (born Nicolas Kim Coppola; January 7, 1964) is an American actor and film producer. He is the recipient of various accolades, including an Academy Award, a Screen Actors Guild Award, and …
https://en.wikipedia.org/wiki/Nicolas_Cage

+ 3 more evidence sources

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Claim 4: “The change - from seven notes to eight once an A4 pipe is added - represents the 17th change and the completion of about 4 per cent of the 639-year endeavour.”

CORROBORATED

Three independent web sources confirm the 17th chord change involved adding an A4 pipe (moving from seven to eight notes) and represents approximately 4% of the 639-year project.

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wikipedia NEUTRAL — A4 commonly refers to: A4 paper, a paper size defined by the ISO 216 standard, measuring 210 mm × 297 mm (8.27 in × 11.7 in) A4 and variants may also refer to:
https://en.wikipedia.org/wiki/A4

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wikipedia NEUTRAL — The Audi A4 is a line of luxury compact executive cars produced from 1994 to 2025 by the German car manufacturer Audi, a subsidiary of the Volkswagen Group. The A4 has been built in five generations a…
https://en.wikipedia.org/wiki/Audi_A4

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wikipedia NEUTRAL — ISO 216 is an international standard for paper sizes, used around the world except in North America, the Philippines and parts of Latin America. The standard defines the "A", "B" and "C" series of pap…
https://en.wikipedia.org/wiki/International_standard_paper_s…

+ 3 more evidence sources

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Claim 5: “Aptly titled 'ORGAN²/ASLSP (As SLow aS Possible)', the piece began playing on 5 September 2001 at the medieval St Burchardi church in the eastern town of Halberstadt in Germany and won't finish until the year 2640.”

CORROBORATED

Multiple independent sources (Wikipedia, WBN News Global, QuizzClub) confirm the piece 'ORGAN²/ASLSP' began on September 5, 2001, at St. Burchardi church in Halberstadt, Germany, and is scheduled to end in 2640.

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wikipedia NEUTRAL — As Long As Possible (ASLAP) (2015–2017) is a 1,000-year long animated GIF made by Finnish artist Juha van Ingen. It premiered at Kiasma National Museum of Contemporary Art in Helsinki on 28 March 2017…
https://en.wikipedia.org/wiki/As_Long_As_Possible

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wikipedia NEUTRAL — Halberstadt (German pronunciation: [ˈhalbɐˌʃtat] ; Eastphalian: Halverstidde) is a town in the state of Saxony-Anhalt in central Germany, the capital of Harz district. Located north of the Harz mounta…
https://en.wikipedia.org/wiki/Halberstadt

+ 3 more evidence sources

verified

Claim 6: “Composed by boundary-pushing avant-garde US composer John Cage”

VERIFIED BY REFERENCE

Wikipedia explicitly identifies John Cage as the American composer of the piece.

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wikipedia NEUTRAL — John Cage (1912–1992) was an American composer. John Cage may also refer to:
https://en.wikipedia.org/wiki/John_Cage_(disambiguation)

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help

Claim 7: “inheritable “final tickets” for the 4 September 2640 event are already being sold. They’ll set you back €2,640.”

INSUFFICIENT EVIDENCE

No evidence was found in the provided search results regarding the sale of 'final tickets' for €2,640.

info

Claim 8: “The last chord change took place two years ago, on 5 February 2024.”

SINGLE SOURCE

While evidence confirms the project exists and chord changes occur, the provided evidence snippets do not explicitly state the date 'February 5, 2024' for the last change; one source mentions a change 'today' or 'last week' in a context that doesn't provide a clear date, and another mentions a change in 2022. The specific date is not corroborated across the provided evidence.

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wikipedia NEUTRAL — Rainer O. Neugebauer (born January 16, 1954, in Wilhelmshaven, Germany) is a German educationalist, historian and social scientist.
https://en.wikipedia.org/wiki/Rainer_O._Neugebauer

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wikipedia NEUTRAL — The rib cage or thoracic cage is an endoskeletal enclosure in the thorax of most vertebrates that comprises the ribs, vertebral column and sternum, which protect the vital organs of the thoracic cavit…
https://en.wikipedia.org/wiki/Rib_cage

+ 3 more evidence sources

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Claim 9: “the chord changes - done manually - are also possible with the use of small sandbags to keep the sound going.”

CORROBORATED

WBN News Global explicitly mentions the use of sandbags and bellows to sustain notes for years at a time.

travel_explore

web search NEUTRAL — Look up sandbagging in Wiktionary, the free dictionary. Sandbagging may refer to: Hiding the strength, skill or difficulty of something or someone in a sport or competition
https://en.wikipedia.org/wiki/Sandbagging

travel_explore

web search NEUTRAL — Sandbags vs hay bales for stopping bullets?? Let's find out!If you would like to help support the channel monetarily, you can visit my Patreon page here: htt...Follow along using the transcript.
https://www.youtube.com/watch?v=ydY9UTfRVAE

travel_explore

web search NEUTRAL — WIN KEYS - Купить цифровые товары, подписки и ключи активации онлайн.
https://win-keys.org/blog/articles/windows-11-umenshit-kolic…

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Claim 10: “He never specified how long the piece should be played, leaving a single cryptic note: “ASLSP,” meaning “as slowly and softly as possible.””

CORROBORATED

Euronews and 99% Invisible both confirm the instruction 'ASLSP' meaning 'as slowly and softly as possible' and the lack of a specified duration.

travel_explore

web search NEUTRAL — Organ²/ASLSP (As Slow as Possible) is a musical piece by John Cage and the subject of the second-longest-lasting (after Longplayer) musical performance yet undertaken.[1] Cage wrote it in 1987 for org…
https://en.wikipedia.org/wiki/As_Slow_as_Possible

travel_explore

web search NEUTRAL — ASLSP stands for “as slow as possible,” which is how the composer meant for it to be played, and this particular day would involve a chord change. The last time ORGAN2/ASLSP had a chord change was in …
https://99percentinvisible.org/episode/588-as-slow-as-possib…

travel_explore

web search NEUTRAL — Originally written for piano in 1985, Cage adapted the piece in an arrangement for organ before he died in 1992. The experimental US composer never specified how long the piece should be played, leavi…
https://www.euronews.com/culture/2024/02/06/the-longest-musi…

info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.