As SLow aS Possible - John Cage

(above is a sped up version of As Slow as Possible by John Cage).

If you take the letters in capital from the title and put them together you will get ASLSP, also known as 'As Slow As Possible', the piece written by American Composer John Cage. The title, of course, gives away the main purpose of this piece: to become the slowest piece of music ever played. It has been playing on a specially built organ in a German Church since 2001, beginning with a pause - this lasted a year and a half.

At time of writing, the last chord change was on the 5th September 2020. Altogether, the performance is meant to last 639 years, so 'til 2640.

The organ