Kings of Leon - In 2010, Kings of Leon were only two songs into their set in St. Louis when they called the whole thing off. The reason was a pigeon infestation in the roof of the venue.
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Iggy Azalea - Artists must get sick of singing the same songs over and over again, but not many do what Iggy Azalea did in 2015: cancel a major US tour for just that reason!
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Neil Young - Neil Young had to cancel a 16-gig tour in 1997 after he sliced off the top of his finger. He was trying to cut a ham sandwich in half at the time!
Justin Bieber - Bieber canceled a 2015 show in Oslo, Norway, after he noticed a pool of water on the lip of the stage. He considered it a trip hazard and so grabbed a towel to mop it up.
Morrissey - Morrissey is a well-known animal rights activist, and in 1999 he canceled a gig in Dresden, Germany, because he found out the venue used to be a slaughterhouse.
Kanye West - Kanye West has canceled shows on a number of occasions. For instance, he called off his show mid-performance when Kim Kardashian was robbed at gunpoint.
Babyshambles - In 2008, Pete Doherty's band Babyshambles, who were unfortunately known for calling off gigs, had their headline slot at Moonfest canceled because Doherty was too wild.
Roger Waters - 'Pink Floyd co-founder Roger Waters decided to cancel his scheduled concerts in Poland in 2022, following controversy surrounding his position on the war in Ukraine.
The Pizza Underground - Macaulay Culkin's band The Pizza Underground canceled a number of UK dates and a slot at Primavera Festival in 2014, after fans didn't laugh at their songs about pizza.
Weezer - Weezer's Rivers Cuomo pulled out of a number of gigs in 1995, just as the band was finding success. He did so because he wanted to have elective surgery on his leg.