At 76, Sir Paul could be forgiven if he slowed down and kicked back in his slippers with a nice cuppa. But that’s not Macca’s way. In fact he’s as busy as ever, going viral with James Corden’s Carpool Karaoke and launching another world tour Sept. 17 in Quebec City. On his 17th solo studio album, McCartney sounds still in his prime—feisty, frisky and having fun. The flirtatious “Come On to Me” is a delirious rocker, while “Fuh You,” produced by hitmaker Ryan Tedder, is sexy and infectious. The rest of the album, produced by Greg Kurstin (Beck, Adele), ranges from the Latin jazz of “Back in Brazil” and the bouncy “Happy With You” (about his wife Nancy Shevell) to the cautionary political tale of “Despite Repeated Warnings.” Ever the gifted melodist, McCartney crafts one of his catchiest with “I Don’t Know,” a vulnerable gem about self-doubt. This is the legendary Beatle at his best.