smoke on the water

During a show by Frank Zappa and The Mothers of Invention and immortalised by the titular Deep Purple hit (whom were also present to witness the incident, scheduled to record the album Machine Head) on this day in 1971, the venue for the Montreux Jazz Festival, the Swiss city’s casino went up in flames after a fan fired a flare gun. A bootleg recording of Zappa’s performance captures the outbreak and fire alarm as the band and audience fled.