U2 pride themselves on being a band of the people, a reputation cemented by the free rooftop concert documented in the clip for 1987's “Where the Streets Have No Name.” But for the post-rave grooves of 1991's Achtung Baby, they dabbled in psychedelic scenery (“Mysterious Ways”) and topsy-turvy camera work (“Even Better Than the Real Thing”). And with “A Beautiful Day,” they delivered a chorus so huge, it summoned a jet flying overhead.