Who plays the main girl in phantom of the opera?
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Who plays Christine Daaé in the Original West End Cast of Phantom of the Opera?
Sarah Brightman, Claire Moore
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Who plays Christine Daaé in the Original Broadway Cast of Phantom of the Opera?
Sarah Brightman, Patti Cohenour
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Who plays Christine Daaé in the Original US Tour Cast of Phantom of the Opera?
Dale Kristien, Mary D'Arcy
The Phantom of the Opera
https://en.wikipedia.org/wiki/The%20Phantom%20of%20the%20Opera
At a gala performance for the retirement of the opera house's two managers, a young, little-known Swedish soprano, Christine Daaé, is called upon to sing in place of the Opera's leading soprano, Carlotta, who is ill, and Christine’s performance is an astonishing success. 
The Phantom of the Opera
Christine Daaé, a young, little-known Swedish soprano in Phantom of the Opera, has been played by multiple actresses. In the original West End Cast, she was played by: Sarah Brightman, Claire Moore. In the original Broadway Cast, she was played by: Sarah Brightman, Patti Cohenour. In the original US Tour Cast, she was played by: Dale Kristien, Mary D'Arcy.