Considering his exalted position in popular music culture (it’s difficult to think of anyone who has contributed more), Paul McCartney has always been remarkably unprecious about his recorded output. Cynics might dismiss the likes of Ebony And Ivory and Pipes Of Peace as pop bromides (let’s not mention The Frog Chorus), but for a songwriter now in his sixth decade at the top it is all part of a seemingly limitless creative flow.