‘I can gauge John’s reaction: that’s good, stick that in’: Paul McCartney on how old bandmates – and Oasis – inspired his nostalgic new album

At 83, McCartney is looking back for his 18th solo LP, to formative flirtations, family singalongs, even his own birth – and the febrile times that mirror our own. It’s given him ‘every hope that we’ll get through’