Now, for a singer to deliberately absent herself from the stage during a performance is a gross breach of...
5 seconds sound clip from the Phantom of the Opera (1943) movie soundboard.
You can hear this line at 00:08:13.564 in the Blu-ray version of the movie.
Quote context
[...]
- Christine! Why weren't you on the stage for the end of the act?
- You're all right, aren't you?
- Oh, yes.
- Mademoiselle DuBois? Come here, please.
- Why weren't you on the stage for the curtain calls, mademoiselle?
- No, you were not. You were entertaining a friend. A friend, mind you!
- Oh... You wish to talk to me, monsieur?
- Now, you bear in your mind what I told you, mademoiselle.
- Terrifying fellow, that Vercheres, when he wants to be.
- I'm very grateful, monsieur.
[...]
