Paul Shaffer’s ‘Swingin’ ‘ message for the kids

“Late Show With David Letterman” bandleader Paul Shaffer is a walking Wikipedia of rock ‘n’ roll history — and now he’s added his own story to the mix. Shaffer’s new memoir, “We’ll Be Here for the Rest of Our Lives: A Swingin’ Showbiz Saga” (Flying Dolphin Press) offers his take on a colorful career, from piano lessons in his native Canada to a “Saturday Night Live” stint to the gig he’s had, and relished, for 27 years — Letterman’s sidekick