Wicked is the Tony-winning Broadway musical that explores the backstory and unlikely friendship of the witches of Oz, presented as a large-scale touring production at the Boston Opera House (also billed as the Citizens Bank Opera House) in Boston. The show features a score by Stephen Schwartz and lavish staging, making it a major musical-theatre event for regional audiences. It is notable for its long-running Broadway success and frequent national tours that regularly play major U.S. venues.