Aerosmith fans were left disappointed after the band's Las Vegas gig was cancelled.
The concert was cancelled just two hours before after lead singer Steven Tyler had to pull out due to illness.
The band released a statement on social media, revealing that the 74-year-old singer was said to be doing "extremely well" after a stint in rehab.
However, he had taken a turn and had been taken sick.
"It is with great disappointment that we are forced to cancel tonight’s show in Las Vegas due to Steven feeling unwell and unable to perform," the group wrote.
"He is expected to make a full recovery for Monday night's Las Vegas show. We sincerely apologize for the last minute notice."
Fans were told that they would receive a refund on their tickets.
The band were tight-lipped on what Steven was suffering from.
Aerosmith started their Deuces Wild Vegas residency in September and it is scheduled to continue to December.
This is the second time the tour has been cancelled after they axed their plans in May when Steven checked into rehab.
He admitted to relapsing on pain meditation after having surgery on his foot.
The band recently signed a deal with Universal Music Group, which means they will put all their hits under one umbrella - this includes any future songs they will make.
Aerosmith have been around for 50 years and have sold more than 150 million albums around the world.
Fans were deeply disappointed, with one person writing: "We flew across country for this show. Spent thousands $$$ beyond ticket cost.
"Is Aerosmith going to pay to fly us back out? I wish Steven a quick recovery and sorry he's ill but that's cost us way more than ticket cost.
Another shared a photo from the venue and wrote: "Awesome. Planned a whole trip around this show. Showed up the the venue and it’s cancelled. Do better #Aerosmith"
Another disgruntled fan wrote: "Thanks for doing it as last minute as possible. Well done. Plane tickets wasted. Can fair wasted.
He continued: "You didn’t know he felt lousy earlier so we could get tix to another show?
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"Now it’s too late to get tix to another show. Well done. Thanks for nothing," they added.
Another chimed: "The show must go on, I understand that things happen, but cancelling at the last minute is disrespectful to your audience, I came from Florida to see you with enthusiasm, so that right now they cancel the concert."
Although one person was sympathetic: "I just can't understand those people here whining. Do you know Steven Tyler's age? This can happen any time."
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