The playing of the piece began in 2001, it is scheduled to be completed in 2640. No, that is not a mistyped number, John Cage’s composition As Slow As Possible is intended to be played over a period of six hundred and thirty nine years (and even that might be considered too short a time, if it is possible to play it even more slowly). The piece is being played by an automated organ in a church in Halberstadt in Germany and the recitation has so far lasted more than …