Sir George Martin, the record producer known as the "Fifth Beatle", has died aged 90, Ringo Starr has said on Twitter.
Sir George helped the Beatles achieve global success as the head of the Parlophone record label after hearing their demo tape in 1962.
Producer and singer Midge Ure has spoken about the death of Sir George Martin, describing him as "one of the most wonderful people I have ever met."
In a phone call to GMB, Ure says "we all learned from George."
He credited Martin not only with giving the world the Fab Four, but with pioneering stereo music.
"Up until George got involved with the music industry, everything was in mono," he explains. "George insisted that we bring in a three-track tape recorder."
Paul McCartney's lengthy tribute to "fifth Beatle" George Martin credits the pop impresario with guiding the Fab Four's musical direction.
The man who made the Fab Four has died aged 90.
The Beatles' record producer, Sir George Martin has died at the age of 90, according to Ringo Starr.