Mystery Solved: Singers in the 1990 Richardson/Dance Film

After a few years of mystery, we have the names of the singers in the 1990 Richardson/Dance movie The Phantom of the Opera, courtesy of an eagle-eyed reader! The opera singing characters in the film are all dubbed by professional opera singers, but while we knew the actors weren't singing themselves, we haven't known who was until now.

The Phantom is sung by Gérard Garino, a French operatic tenor who has also sung in some professionally filmed operas.
Christine is sung by Michele Lagrange, a French operatic soprano with an illustrious career including singing where the original Christine actually did, at the Paris Opera.
Carlotta is sung by Hélia T'Hézan, a French operatic soprano with a few credits to her name in French opera.
Faust (Alfredo) is sung by Jean Dupouy, a French operatic baritone with several concert appearances.
Mephisto (Oroyeso) is sung by Jacques Mars, a French operatic bass-baritone especially famous for singing the role of Mephisto in several different operas based on the Faust story.