’60s Texas pop act the Clique is probably best known these days for what was originally a b-side on their 1969 single “Sugar on Sunday” (a cover of the Tommy James’ tune). Breezy, lazy, and cheerful — with more than a hint of the Beatles’ influence — “Superman” perfectly captures the feel-good vibes found in the best Silver Age comic-book stories about the Last Son of Krypton.