In 1971 Pink Floyd played a show in London that was so loud it killed all the fish in a lake 100 yards away.
Pink Floyd were refused payment after a show in 1966. The club owner claimed “Their performance wasn’t music”. They took him to court and lost.
Pink Floyd’s Dark Side of the Moon earnings were invested in a floating restaurant, a fudge-making hotel, a computer game, a film nobody saw, a skateboard company, a car hire business, and a children’s shoe factory. All complete failures. They fled to France as tax exiles and recorded The Wall.