Paul McCartney has opened up about what he thinks is the 'greatest song ever' as he paid tribute to the late Brian Wilson.

Paul McCartney has shared his thoughts and music, revealing the 'greatest song ever written' as he paid tribute to the late Beach Boys co-founder Brian Wilson

The 21-year-old Lennon wrote the letter over five nights in April 1962, during the Beatles' residency at the Star-Club in Hamburg.

She’d later crop up in a newspaper story and trigger Paul to pen the Sgt. Pepper classic - but did he remember that he’d already met the girl in question?

Paul McCartney has revealed what he thinks is the 'greatest song ever written' as he paid tribute to Beach Boys singer Brian Wilson, who sadly died earlier this week

Just shy of six decades later, Ernie Isley and Paul McCartney would cross paths — in a vineyard of all places. “A few years ago, we were in New York at the estate of a family that owns a red wine, and the Isley Brothers were part of the entertainment ...