Linkblog 🔗: John Cage: Organ playing 639-year-long piece changes chord 🎵

The longest - and slowest - music composition in existence had a big day on Monday - it changed chord for the first time in two years.
Crowds gathered at a church in Germany to witness the rare moment, which is part of an artistic feat by avant-garde composer, John Cage.
The experimental piece, entitled As Slow as Possible, began in 2001. Being played on a specially-built organ, it is not set to finish playing until the year 2640.