Master Class, the Tony-winning play by Terrence McNally, tells the story of the uncompromising opera diva Maria Callas as she delivers a life altering master class to students at an elite opera training program. Support American Theatre: a just and thriving theatre ecology begins with information for all. Please join us in this mission by making a donation to our publisher, Theatre Communications Group. When you support American Theatre magazine and TCG, you support a long legacy of quality nonprofit arts journalism. Click here to make your…