Summer is not officially the silly season on Broadway, but you might be forgiven for assuming so should you wander into the Hudson Theatre, where “Head Over Heels,” a fearlessly loopy new jukebox musical drawing on the back catalog of the Go-Go’s, has taken up residence. The musical features, among other woolly diversions, a shepherd who dresses in drag as an Amazon, a king tricked into committing adultery with his own queen (long story), a proud princess who discovers a Sapphic love for her servant, some singing sheep, and a Delphic oracle of nonbinary gender, addressed not as a “he” or a “she” but a “they.”
Why, you might well wonder, do kings and queens and Delphic oracles — all speaking in pseudo-Elizabethan language — suddenly descend into the far less formal lexicon of the late-20th-century pop song when the guitars start churning out the Go-Go’s riffs?