Hedwig and the Angry Inch may be the most prescient show in Broadway history; originally developed as a glam-rock riff on a gender-bending myth from Plato’s Symposium, this 1990s musical made the leap to Broadway in 2014 just as America collectively freaked out about borders of every stripe: borders between genders, nations, and even bathrooms. And while Hedwig — which follows the adventures of a transsexual émigré(e) from Berlin — has much to say about sexual identity, it’s also a searching examination of the contemporary quest for neat and tidy categories, categories that Hedwig — the character and the musical — constantly explodes. (In that respect, it’s the queerest musical ever.) With a book by James Cameron Mitchell and music/lyrics by Stephen Trask, this touring production stars the terrific Euan Morton, a Tony nominee for his portrayal of Boy George in Taboo. There are only three performances at the Tobin, so grab tickets soon: the production is sure to be Hed-spinning. $39.60-$124.50, 8pm Sat, Apr. 8, 2pm & 7pm Sun, Apr. 9, Tobin Center for the Performing Arts, 100 Auditorium Circle, (210) 223-8624, tobincenter.org.