"The Phantom of the Opera" is a musical with music by Andrew Lloyd Webber, lyrics by Charles Hart, and a libretto by Lloyd Webber and Richard Stilgoe. It is based on the 1910 French novel of the same name by Gaston Leroux). The story follows a beautiful soprano named Christine Daaé, who becomes the obsession of a mysterious, masked musical genius living in the subterranean labyrinth beneath the Paris Opéra House. The Phantom, who was born with a deformed face, is feared and reviled by society and was cruelly exhibited in a cage as part of a traveling fair until he eventually escaped and took refuge beneath the opera house).

The musical is part romance, part Gothic melodrama, and part spectacle. It features songs such as "The Phantom of the Opera," "Music of the Night," "Think of Me," and "All I Ask of You," which are known for their sweeping, big, and romantic sound. The plot revolves around the Phantoms obsession with Christine and his attempts to make her a star, while also dealing with the jealousy of Christines childhood sweetheart, Raoul.

The musical has been adapted into several films, TV shows, and other productions, and has played to over 140 million people in 35 countries. It is known for its iconic moments, such as the Phantoms lair, the chandelier, and the mirror. Overall, "The Phantom of the Opera" is a story of love, passion, jealousy, and madness that has captivated audiences around the world for decades.