The guitarist from Scottish band Texas is fighting for his life after suffering a brain haemorrhage, according to reports.
Alistair McErlaine was taken to a London hospital on Tuesday where his wife Shelly is keeping a bedside vigil, the Daily Record said.
Texas singer Sharleen Spiteri told the paper: “I am thinking of Ally and all of his family at this time. My thoughts are with them.
“Like everyone else, I am desperately hoping Ally will get well and pull through. It is a shock. He is a personal friend and all of us are wishing him well with all our hearts.”
A spokesman for the band told the Daily Record: “We heard the news today. It is something we are still coming to terms with. Ally is a great lad and well liked by everyone. He has had a bad one. We have been told the next 48 hours are critical.”
Formed in Glasgow in 1988, Texas sold more than 1.5 million copies of their 1996 album 'White On Blonde' in the UK.
By 2005 they had amassed 13 top 10 hits including 'Say What You Want', 'Summer Son' and 'I Don’t Want A Lover'.