Phil Collins sparked concern among fans when he was when spotted being pushed to his hotel in a wheelchair ahead of a US gig last weekend.
The 68-year-old star - who has been plagued by agonising health issues for a decade - looked frail as he arrived for the show in Atlanta, Georgia.
And just the next day, the brave rocker fell backwards off his chair while watching his son Nicholas, 18, do a drum solo at at the Spectrum Center in Charlotte, North Carolina.
In footage of the accident, the crowd is heard screaming in shock as Phil falls on his back while aides rush to help.
The eighties' icon's health has been deteriorating since 2009 when he injured a vertebrae in his upper neck while performing.
Two years later he was forced to retire after the crippling nerve damage left him unable to play the drums.
In a message published on the Genesis website, Phil explained, "Somehow, during the last Genesis tour, I dislocated some vertebrae in my upper neck and that affected my hands.
"After a successful operation on my neck, my hands still can't function normally. Maybe in a year or so it will change, but for now it is impossible for me to play drums or piano."
Insisting he wasn't 'distressed' about his prognosis, Phil retreated to Switzerland to spend time with his third wife, Orianne Cevey, and their young sons Nick and Matt.
But that period was to become one of his darkest after his marriage collapsed and Orianne and the children moved to Miami.
Never much of a boozer, what started as a relaxing drink while watching TV soon became a near fatal battle with the bottle.
"Within months you're drinking vodka from the fridge in the morning and falling over in front of the kids, you know," he admitted during a 2016 press conference.
"But it was something I lived through, and I was lucky to live through it and get through it. I was very close to dying."
The harrowing situation came to a head in 2012 when he was rushed to a Swiss hospital with acute pancreatitis.
He realised he was just hours away from death when he heard the doctor ask his family if his will was in order.
"My organs were kind of f****d. It was spirits, corrosive stuff," he later admitted.
Despite a stay in rehab, Phil later got so drunk on a trip to Turks and Caicos with his sons that he had to be airlifted off the island to New York.
In 2013, doctors told him his pancreas was showing signs of permanent damage and he finally quit boozing for three years.
These days he's not as strict. “I didn’t drink for all that time but now I am quite capable of having two or three glasses of wine, saying goodnight and walking away,” he told The Mirror.
Happy and healthy and reunited with Orianne, in 2016 he 'changed his mind' about retirement and revealed plans for five nights at London's Royal Albert Hall and dates in Cologne and Paris.
By that point he was walking with a cane and admitted he wouldn't be able to drum - although he hoped to at least manage the famous introduction to In The Air Tonight.
Surgery to fix his spine had caused nerve damage in her foot, meaning he could no longer stand for any significant amount of time.
“I have eight screws in my back but it left my foot numb," he told The Mirror, explaining how his bad drumming posture caused his injuries.
Instead, his son Nicholas, then 15, would be doing the drumming.
And in a nod to his ill-health, he dubbed the tour Not Dead Yet, Live.
Sadly, he was forced to cancel two of the London shows after a nasty fall in his hotel room.
"Phil suffers from 'drop foot' as a result of a back operation which makes it difficult to walk," a statement on his Facebook page said.
"He rose in the middle of the night to go to the toilet and slipped in his hotel room, hitting his head in the fall on a chair.
"He was taken to hospital where he had stitches for a severe gash on his head close to his eye and is recovering well. He will be kept under observation for 24 hours."
But despite the setbacks, he defiantly extended his tour to the US and Australia.
And he's showing no signs of slowing down with even more shows scheduled this week.
