The world's longest concert lasted 639 years and is still playing in Halberstadt, Germany.
✓ TRUE FACT
John Cage’s Organ²/ASLSP performance in Halberstadt began in 2001 and is scheduled to run until 2640—a planned duration of 639 years. Notes (chords) change only every few years, turning the “concert” into a generational event. (Wikipedia)
🤯 "The world's longest concert lasted 639 years and is still playing in Halberstadt, Germany. No encore expected."