A lullaby. It didn't seem very effective as a lullaby.
5 seconds sound clip from the Phantom of the Opera (1943) movie soundboard.
You can hear this line at 00:35:24.190 in the Blu-ray version of the movie.
Quote context
[...]
- Anatole, well, he's been helping me.
- Not at all, monsieur. I find it a pleasure.
- I'm Anatole Garron of the Opera.
- Oh, I'm so sorry. This is Inspector Daubert, of the Sûreté.
- I've heard of you, Monsieur Inspector. Your work must be exciting.
- Not so exciting as yours, monsieur. It doesn't lend itself to self-expression.
- It's not from an opera, Raoul. It's a lullaby.
- A lullaby. It didn't seem very effective as a lullaby.
- Well, you see, Monsieur Inspector, a song is capable of many interpretations by a musician.
- By a detective, too. Though no doubt the detective is usually mistaken.
- I must see you alone, Christine. I'm here on business from the Sûreté.
- With me?
- What business could mademoiselle have with the Sûreté?
- What is it, Raoul? If you don't mind, I'd rather Anatole stay.
- Very well, Christine. You know Erique Claudin?
- I knew him only as a violinist in the orchestra.
- I encountered him a few times in the foyer or on the stage or outside the Opera, but that's all.
[...]
