Paul McCartney entered the ’70s with the Beatles in his rearview window. They’d obviously be quite an act to follow. Then ...

The Paul McCartney diss track John Lennon wrote in 1971 also featured another former Beatle, adding salt to the wound.

Paul recording Ram in New York, 1970. Photo by Linda McCartney. If John came up with a brilliant song, I’d be ‘Ok, let’s try and be brilliant-er’. The audience for McCartney Mastertapes ...