Charlie Bucket is an impoverished lad whose fortunes turn when he uncovers one of five golden tickets concealed in Wonka chocolate bars, bestowing access to the fabled Wonka grounds where chocolate rivers flow, edible flowers grow, and Oompa-Loompas serenade departing guests with macabre morality songs. How has a global chocolatier like Willy Wonka successfully evaded the authorities when his working conditions seem explicitly engineered to maim visitors? Don’t think too hard about it; without these hazards, Charlie and the Chocolate Factory would lose its hilarious means of dispatching characters for their vices. Such delightful weirdness is given an entirely new dimension via the heightened atmosphere of the stage production. While retaining songs like “The Candy Man” and “Pure Imagination,” this musical also introduces compositions from Marc Shaiman and Scott Wittman, a duo celebrated for their work on Hairspray. Adapted by Scottish playwright David Greig, the show retains the story’s eccentric wit.