Sir Paul McCartney is recovering from a secret heart operation.

The 65-year-old underwent a coronary angioplasty – a procedure to open up arteries, allowing a greater flow of blood to and from the heart just before the holidays, according to The Sun.

“Paul had been complaining about not feeling well and saw a Harley Street specialist at The London Clinic. “Tests were carried out and the decision was taken to operate. Paul had the angioplasty in a private hospital. It was all very routine but any work on your heart is a big deal.”

A spokesman for the former Beatle confirmed the surgery:

“It was a routine medical operation.”