NEW YORK (AP) — After all these years, it’s hard to conceive of something unprecedented happening in Beatles world. But here it is, on Paul McCartney’s new disc “The Boys of Dungeon Lane,” the first-ever duet between surviving band members McCartney and Ringo Starr.It’s lovely. The two men reminisce about a hardscrabble childhood in Liverpool that they never considered rough because, as the title says, it was “Home to Us.”On one level, it’s remarkable that these men, now in their mid-80s, are still turning out new music. Occasionally, they’ll remind you of heights they once reached: McCartney’s 2011 love song to his wife Nancy, “My Valentine,” or gems like “Long Tailed Winter Bird.” Starr’s recent country work with T Bone Burnett is a match made for him.One shouldn’t expect profound ruminations on mortality from McCartney as he approaches his 84th birthday. That wouldn’t be his style anyway. At its best, the album named for a Liverpool street offers quaint memories of his youth. On “Down South,” he recalls bus rides with George Harrison that were “a good way to get to know you, before we learned to twist and shout.” “Days We Left Behind” looks back on the impermanence of life with fondness, not regret.