The legendary crooner is pulling out of concerts in New York, Maryland, Connecticut, Arizona, Oklahoma and Canada. Ticket holders should check with the local venues for information regarding refunds.

Bennett, who just turned 95, teamed up with Lady Gaga for two nights at New York’s Radio City Music Hall last week. The concerts were filmed for broadcast at a later date.

Lady Gaga and Bennett previously collaborated on the song “The Lady Is a Tramp” for Bennett’s 2011 “Duets II” album. Their collaborative album “Cheek to Cheek” debuted at No. 1 on the Billboard Album charts and earned them a Grammy for “Best Traditional Pop Vocal.”

Earlier this year, Bennett’s family revealed that the 19-time Grammy-winner was diagnosed with dementia in 2016.