It's being reported that Sam Smith was left raging after his Brits performance was almost cancelled due to technical difficulties.
The singer is believed to have been spotted arguing backstage over delays which were caused by a malfunctioning set during his spectacular Unholy show with Kim Petras on Saturday night.
The set was said to cost £500,000 and Sam, 30, allegedly was not happy with the crew's efforts to fix the problems on the night.