“And some people wondered, ‘What does it really mean to play something as slow as possible? Couldn’t it always be a little slower?’ They finally decided that you could play until the instrument stopped working. They figured that a new organ would last for 639 years, so they decided you could play this piece so slow that it took 639 years to finish — and that would be the slowest.”

From Hopeful Music. There’s something that reminds me of The Long Now in the project.