In 1999, ex-Pogues banjoist Jem Finer composed a piece of music that will take 1,000 years to perform. It’s been playing continuously at Bow Creek Lighthouse at Trinity Buoy Wharf on the north bank of the Thames since midnight on Jan. 1, 2000, and will continue until Dec. 31, 2999. (Shown here is an excerpt of 1,000 minutes performed live in 2009 at the Roundhouse in London.)

The piece is essentially a computer-administered series of variations on a core composition that’s 20 minutes and 20 seconds long; the current rendition is played on Tibetan singing bowls and gongs, but in principle it might be played on any instrument and indeed by any means; the conclusion of the piece might be mediated by technologies, and certainly will be by people, that don’t exist today.

It can be heard at various listening stations around the United Kingdom, and a mobile app is available that plays a version synchronized with the Trinity Buoy Wharf performance.

See Larghissimo.