During the conclusion of the "Don Juan" scene, when Christine pulls off the Phantom's masque and wig to reveal his true deformity, such a sight terribly frightens everyone in the audience so badly that even Monsieur Reyer, the orchestra director, has put aside the baton and raised a handkerchief to lips, trembling in shock. However, only seconds later, when the camera pulls away, we see him again for a brief moment, calmly directing a 4/4 beat over the orchestra. Quite unusual recovery time, especially given his age and the present scenario. [The time lapse between Monsieur Reyer trembling in shock and again conducting the orchestra is 7 seconds. Monsieur Reyer is a consummate professional and would attempt to resume order by continuing to do his job. He later becomes shocked and trembles in a second and separate incident when the Phantom and Christine plunge beneath the stage.]

During the final part of "The Phantom of the Opera" (when Christine is singing her high notes) and during the beginning of "The Music of the Night", there is a brilliant white reflection of light on the water. Visible mostly through the grated entryway during the shots of Christine, the light in question has a distinct similarity to sunlight (or light from a set), too golden and bright in color to be moonlight, and far too bright to be a gaslight. It's implied before that Christine is taken down to the Phantom's lair at night, making sunlight inappropriate for the time in question. A few scenes later, when Christine is awoken by the musical box, the "sunlight" is located in the same place. Over the course of at the very least a few hours, the light would have moved. [The light is either coming from many many candles or several gaslights. It's entirely possible that his lair is situated right below the dancing girls' room(s) and the light from there is shining down in the first part. Once she wakes up, several hours have passed and it's morning, so the sun would be entering their room and filtering into the lair.]

When Andre meets up with Firmin during Masquerade and gets his picture taken, he is wearing a rooster headdress, but during the dance sequence as he's seen on and around the stairs, it's gone. We can see that better when The Phantom sticks the sword in his face. [A lot of time passes between these shots. He had plenty of time to take it off. Who knows, he probably thought it was heavy or itchy.] Corrected by Sereenie

When Christine is approaching her father's grave, to the right of the screen, a jacket is visible lying on a grave, and disappears in some shots. [There is no jacket. It's the draping of the statue.] Corrected by Sereenie

During the rose crushing scene on the rooftop, just before The Phantom runs for the statue, when he drops the rest of the rose and stem, a glove falls to the ground as well. But when he's up on the statue screaming to the heavens, The Phantom is wearing gloves again on both hands. [No glove falls. Only the rose and its ribbon.] Corrected by Sereenie

As Christine and the Phantom first enter the lair in the boat, when we get the first sweeping look at the living quarters of the lair, we can see the alcove which contains the Christine mannequin, which will cause Christine to faint in a few minutes. You can see that it is totally bare. [The mannequin is seen in the alcove, and it is dressed. Whatever that 'bare' is applied to (mannequin or alcove), the mistake isn't right.] Corrected by Sereenie

In "Don Juan", when they zoom in on the cello player, the cello has no strings. [There is only one shot where the cello is seen (around 1:46:10) and it definitely does have strings.] Corrected by Sereenie

The Phantom's masks are held on with elastic. However, elastic didn't exist in the 19th century, when the movie is set. [It's not an elastic, merely a flexible type of string. Silk probably.] Corrected by Sereenie

It is not possible that Mme. Giry could have gotten to the mirror room in time to grab Raoul that fast. She would have to go down at least one flight of stairs and several hallways(judging by where Raoul fell through) while still managing to keep a lower profile. [Everyone was examining the hole through which Raoul fell so they wouldn't have noticed her sprinting to the stairs and through the hallways.]

When Firmin and Andre are reading their letters from the Phantom to each other, their mouths don't match up with the audio. [This is incorrect. The mouths do synch with the audio.]

In "Think of Me", when Christine hits the high note at the end, she has a wide smile on her face. I am a choir student, and I can assure you that it is impossible to sing that note without dropping your jaw a lot more. Had she attempted to, the note would have been painfully sharp. She doesn't have her jaw dropped enough in "The Phantom of the the Opera" either. [I, among others, am able to hit that note without dropping my jaw very far. You're supposed to smile if you're flat to sharpen it up and perhaps her voice is naturally a bit flat. In "Phantom of the Opera" we can only see her face for a small part of when she's singing the higher notes and her jaw is pretty dropped. Not to mention we can't see her on her highest note.]

During the rehearsal of Hannibal, Piangi walks on stage wearing a hat, in the next shot the hat is under his arm. [It's perfectly logical that he would have enough time to pull off his hat while the old manager is introducing the new ones. All the other guys take off their hats as well.]

When the Phantom appears at the top of the stairs during Masquerade his hands are empty, yet by the time he reaches the bottom he's holding the score to Don Juan. [That's because he has the score tucked into his belt.]

At the beginning of the movie when Carlotta is singing her rendition of Hannibal the Phantom drops a background on her. It's impossible that she'd be okay because oleos (which is what holds the background down) are VERY heavy and would at least break her legs. [The oleos hit the ground right behind Carlotta. She is knocked off her feet by the canvas collapsing only.]

When Raoul is on his way to the Phantom's lair after "The Point of No Return," he falls through the floor and into one of the Phantom's traps. The ceiling above him is lowering, and there is a handle in the water that he eventually turns, causing the gate to rise and he is able to escape. This seems ridiculous: how could a genius like the Phantom overlook this and put the escape to his trap in easy reach of the victim? [The Phantom actually wanted Raoul to arrive at the lair. The trap was meant to delay Raoul and give the Phantom some time alone with Christine before the confrontation.]

In the Masquerade scene, when Madame Giry has her line, "And what a Masquerade", you can see Meg in the background mouthing the line as well. [Actually, several people in the background are singing the same line - it's just the Mme. Giry is the only one "highlighted" so to speak.]

When Raoul is running down the stairs to the Phantoms lair, he looks over the side and sees the stairs fading into the distance, he then falls into the water trap, but he should just fall through to the next set of stairs. [Presumably, he is tossed into some sort of chute which bypasses the stairs and takes him over to where it drops to the water.]

Before Christine removes the Phantom's mask after Don Juan, his hair is brown and nicely slicked back. However, a split second after she removes the mask, it magically turns to blond and disheveled. [As this has been corrected a few times before, when Christine pulls off the mask she also pulls off a wig that the phantom was wearing.]

In the lair scene when the Phantom shows Christine her wedding dress for the first time and she faints, when he starts to carry her to the bed, he runs her head into a large tassle that drags across her face. [This is not a mistake.]

During the performance of Don Juan, there is a fake fire pit in the middle of the stage. The only way for the cloth 'fire' to be blowing continuously would be if there was an electric fan below the pit. Also, when the Phantom and Christine plunge into the pit, there is no fan to be seen. [An "electric" fan is not the only way to go: there are mechanically-powered fans, for example. As for there being no fan when they fall, the bright lights inside the hole prevent us from seeing what's in it, so we don't know what is the precise arrangement there.] Corrected by Sereenie