There's a piano piece [1] which is quite short but the original indication by the composer is to repeat it more than a thousand times[2], meaning performances take more than 24 hours when they happen, which is understandably very seldom.
There's also things like John Cage's "As Slow as Possible", which there is a performance of ongoing now. It started in 2001 and you may want to rush to catch the end of it because it finishes in the year 2640.
[1] Maybe by Ravel- my memory and a quick googling is failing me right now
[2] It's some special slightly arbitrary-sounding number like 2347 or something
Not sure if that fits, but maybe the piano piece is the Philip Glass album "Solo Piano", which is variation on the same base melody thorough the whole album?
It’s not that one but Glass and Cage were both very influenced by it. This is going to really bug me now. The piece is not very well known but it’s by a very well-known composer either Ravel or Satie I’m almost sure.
It’s fewer repititions than I had remembered at a mere 840.
When John Cage, David Tudor and others gave the first public performance, it took over 18 hours and they gave a refund to audience members of 5c for each twenty minutes they stayed for
There's also things like John Cage's "As Slow as Possible", which there is a performance of ongoing now. It started in 2001 and you may want to rush to catch the end of it because it finishes in the year 2640.
[1] Maybe by Ravel- my memory and a quick googling is failing me right now
[2] It's some special slightly arbitrary-sounding number like 2347 or something