Really? You may be interested to know, Monsieur Daubert, that circumstances connected with the murder of Biancarolli demand that Christine does sing.

7 seconds sound clip from the Phantom of the Opera (1943) movie soundboard.

You can hear this line at 01:03:52.239 in the Blu-ray version of the movie.

Quote context

[...]

- Well, now, one at a time, please.

- You first, Anatole, because your name begins with an A.

- They're going to reopen the Opera, Christine. At last, you and I are going to sing...

- You are wrong, monsieur. I'm sorry, Christine. They are going to reopen the Opera, but without you.

- Circumstances connected with the murder of Biancarolli demand that someone else sing the role in your place.

- Really? You may be interested to know, Monsieur Daubert, that circumstances connected with the murder of Biancarolli demand that Christine does sing.

- Really? I am aware that your profession requires a certain self-assurance, but aren't you going too far?

- Not at all.

- I have a plan of my own for apprehending the murderer.

- So you have turned detective, monsieur?

- I have.

- Very well, if it amuses you. But I advise you to confine your hobby to the entertainment of yourself and your friends.

- Now let's not waste words, monsieur.

[...]