Paul McCartney wrote a few heartfelt songs about more than one person; and a few of them are absolutely heartwrenching.

Trying to pick one song to sum up Paul McCartney's legacy is impossible, but if he could decide, he'd choose this Beatles track to be remembered for.

Revisiting 'Back in the USSR', a forgotten solo album by former Beatles member Paul McCartney which was released exclusively in the Soviet Union back in 1988.