Legendary record producer Sir George Martin, known as the "Fifth Beatle", has died aged 90.
The news was first announced in a tweet by Beatles' drummer Ringo Starr late on Tuesday night, which read: "God bless George Martin. Peace and love to Judy and his family, love Ringo and Barbara. George will be missed."
In a career spanning five decades, Sir George signed the Beatles to their first record contract in 1962 and went on to produce more than 700 records, with huge chart success including 23 No. 1 singles in the US and 30 in the UK.
He also worked with many other well-loved artists including Gerry and the Pacemakers, Shirley Bassey and Cilla Black.
A Universal Music Group spokesperson this morning confirmed Sir George's death, but further details have not yet been revealed.