A Deep Portrait of Nerd Angst
The twenty-three-year-old actor Ben Platt, known for his adorkable role in the "Pitch Perfect" movies, delivers a deeper portrait of nerd angst in "Dear Evan Hansen," a new musical by Benj Pasek, Justin Paul, and Steven Levenson, beginning previews at the Music Box on Nov. 14, after an acclaimed Off Broadway run. Platt plays the title character, a friendless, phobic high-school senior who gets caught up in a moral qu…