It’s been months since I sat down to listen Sgt. Pepper’s Lonely Hearts Club Band (I’m as careful of this as the truly devoted Led Zeppelin fan is of avoiding “Stairway”). But I just got the jolt, one I had as a child when I first heard it, of the Edwardian laughing gas feel when the title track bounces into “With a Little Help from My Friends.” Sublime without the Alps.