A 17-year-old promoter in Cologne booked jazz pianist Keith Jarrett but a mistake left an out-of-tune piano with dead keys on stage. The promoter pleaded and the show went on and was even recorded. “The Köln Concert” became the best-selling solo album in jazz history and the best-selling piano recording ever. – WTF Fun Facts
Source: BBC Radio 4 – For One Night Only, Series 6, Keith Jarrett: The Cologne Concert
