The Phantom of the Opera still used for training firefighters. The mysteries that Leroux uses in his novel about the Phantom are still mysteries. "The Phantom of the Opera"'s origins came from Leroux's curiosity with the Phantom being real. In the prologue he tells the readers about the Phantom and the research that he did to prove the truth of the ghost. His findings connected the corpse from the opera house to the Persian phantom himself. The claims from the prologue of his novel were ones that Leroux held onto even up until his death in 1927. In Paris in the 1880s, the Palais Garnier
The Phantom of the Opera (1986 musical) and Canadian productions. The recording of the 1986 original London cast, released by Polydor Records in 1987, was released in both a single CD "Highlights From The Phantom of the Opera" and a two CD "Phantom of the Opera", both of which have been certified 4× Platinum in the US and sold 4.97 million copies as of January 2017. "The Complete Recordings" edition has sold 507,000 copies since 1991. "Phantom" was also certified 3× Platinum in the UK. The Canadian cast recording went 2× Platinum in Canada. In Switzerland, "Phantom" was certified 3× Platinum and "Highlights" was certified 2× Platinum.