Sir George Martin was often dubbed the fifth Beatle
Beatles producer Sir George Martin, is recovering after undergoing "routine surgery", his manager has confirmed.
"George Martin had routine surgery earlier this week. He spent one night in hospital and is now back at home," Adam Sharp said.
He did not disclose what the 83-year-old, sometimes dubbed the fifth Beatle, had been treated for.
Sir George is credited with helping to shape the quartet's sound throughout almost their entire recording career.
The Beatles auditioned for him in 1962 at the famous Abbey Road studios.
Their first recording together was How Do You Do It.