Disappointed

Lauren, 31, said: “I can’t imagine what it has cost us all individually.

“This is my job and yet he had no budget to pay us for the time it took to get ready.

“One of our members is a musician who cancelled a number of paid gigs to rehearse and appear. His lost revenue is way more than £500.”

Friends and family had also bought tickets in anticipation of watching the choir back Manilow on Let Freedom Ring and It’s A Miracle.

His team did not respond to requests for comment but Lauren said she was contacted by the star’s husband and manager Garry Kief who said a small donation was made.

Lauren added: “I told him how disappointed we were and stressed how badly it had been handled.”

The donation went towards the choir’s fundraising for theWorld Transplant Games in Leeds next month.