Michael Whistler’s “Casse Noisette” (The Nutcracker) interweaves the life of Russian composer Pyotr Ilyich Tchaikovsky with that of a deeply-closeted modern-day American high school teacher obsessed with Tchaikovsky’s music. Sugar Plum Fairies and phone sex workers collide in this tale about discovering the strength to be true to one’s self, whatever the cost. Eight performances only. Details and ticketing information at BridgeSt.org.