Mamma Mia Broadway ShowShow Summary Set in the beautiful Greek isles, the Broadway musical Mamma Mia incorporates nearly two dozen songs by international pop sensation ABBA into its lively story about soon-to-wed Sophie, her free-spirited single mother Donna, and three men from Donna's past -- one of whom, Sophie hopes to discover, is her father. Broadway Review Mamma Mia has become a global smash since its 1999 London debut, and its biggest fans are usually the middle-aged crowd who fondly remember the disco days of ABBA. Women in particular enjoy watching fun-loving Donna and her two wacky best friends reminiscing about the wild days of their youth, when they were in a singing trio. Since the show's plot is a bit thin and the tone decidedly silly, the upbeat musical Mamma Mia is best appreciated as a big Broadway-style ABBA concert.