Frank Zappa and the Mothers were at the best place around.

There you are minding your own business, enjoying a concert by a legendary rock band, Then suddenly some stupid with a flare gun burns the place to the ground. “Wait a minute” I can hear you all think “This and the title sounds very much like a song” and you would be right.

Deep Purple wrote a song inspired by an event which took place on December 4,1971 in Montreux, Switzerland. On December 4, 1971, Montreux Casino burned down during a concert by The Mothers of Invention after a fan had set the venue on fire with a flare gun. A recording of the outbreak and fire announcement can be found on a Frank Zappa Bootleg album titled Swiss Cheese/Fire!

Deep Purple, who had planned to record Machine Head at the venue were forced to find another recording location. They wrote the Rock classic ‘Smoke on the Water’ about the eventful day.

Frank Zappa and The Mothers of Inventions were performing “King Kong”, about 80 minutes into the show , when, during Don Preston’s synthesizer solo, someone shot off a flare gun. The flare hit the wooden roof and quickly spread.

“They were very organized,” Zappa said in an interview shortly after the fire. “I was just lucky that many of the fans]were able to speak English, because I didn’t know what to say to them in French.”

In an ironic coincidence, Zappa died on Dec. 4, 1993, the 22nd anniversary of the fire.

sources

https://kmhk.com/frank-zappa-fire-smoke-on-the-water/

https://www.kpbs.org/news/2015/03/08/a-swiss-town-a-casino-fire-and-smoke-on-the-water

https://www.thevintagenews.com/2016/11/08/the-story-of-deep-purples-smoke-on-the-water-a-theater-fire-caused-by-a-flare-gun/?chrome=1

Fire in the Sky

https://ultimateclassicrock.com/frank-zappa-fire-smoke-on-the-water/