who's the protagonist of this book?
Erik.
The Phantom of the Opera

Back at the Palais Garnier, the new managers receive a letter from the Phantom demanding that they allow Christine to perform the lead role of Marguerite in "Faust", and that Box 5 be left empty for his use, lest they perform in a house with a curse on it. The managers assume his demands are a prank and ignore them, resulting in disastrous consequences; Carlotta (based on the late singer Madmoiselle Carvalho) ends up croaking like a toad, and the chandelier suddenly drops into the audience, killing a spectator. The Phantom, having abducted Christine from her dressing room, reveals himself as a deformed man called Erik. Erik intends to hold her prisoner in his lair with him for a few days, but she causes him to change his plans when she unmasks him and, to the horror of both, beholds his noseless, lipless, sunken-eyed face, which resembles a skull dried up by the centuries, covered in yellowed dead flesh.
phantom of the opera movie did they sing Yes, It is a musical drama film ad most of the actors sang. can you name some of the actors? Gerard Butler , Emmy Rossum, Patrick Wilson, Miranda Richardson, Minnie Driver, and Jennifer Ellison. how was its box-office performance? The film obtained 9th spot at the box office,during its 1,511 screens wide release on 21 January 2005 and a gross of $51.2 million is it movie based on a novel? Yes, It is based on the 1910 French novel "Le Fantôme de l'Opéra" by Gaston Leroux. when was it published? Pierre Lafitte. what was the author's professional background? He left journalism in 1907 and began writing fiction. can you speak about some of his journalistic endeavours? His most important journalism came when he began working as an international correspondent for the Paris newspaper "Le Matin". apart from the above mentioned novel, did he write anything else? Yes, Some are "Le mystère de la chambre jaune", "The Mystery of the Yellow Room" is one of the most celebrated locked-room mysteries.
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The Phantom of the Opera [SEP] Plot summary
In Paris in the 1880s, the Palais Garnier Opera House is believed to be haunted by an entity known as the Phantom of the Opera, or simply the Opera Ghost. A stagehand named Joseph Buquet is found hanged and the noose around his neck goes missing. At a gala performance for the retirement of the opera house's two managers, a young little-known Swedish soprano, Christine Daaé (based on singer Christina Nilsson), is called upon to sing in place of the Opera's leading soprano, Carlotta, who is ill, and her performance is an astonishing success. The Vicomte Raoul de Chagny, who was present at the performance, recognizes her as his childhood playmate and recalls his love for her.