<Li> Christine Daaé: A young Swedish soprano at the Paris Opera House with whom the Phantom falls in love . </Li> <Li> Vicomte Raoul de Chagny: Christine's childhood friend and love interest . </Li> <Li> The Persian: A mysterious man from Erik's past . </Li> <Li> Comte Phillipe de Chagny: Raoul's older brother . </Li>

What is the story behind the phantom of the opera