Are the actors in phantom of opera actually singing?

In the original stage productions and film adaptations of "The Phantom of the Opera," the actors portray their roles and perform their songs live. The vocals are not typically pre-recorded or dubbed. The lead roles, specifically the Phantom, Christine Daaé, and Raoul de Chagny, are all played by actors with strong singing abilities. During live performances, the actors sing in real-time, allowing them to interact with the orchestra and convey emotions effectively.