The next time you hear the music, continue with the lesson as if nothing had happened, then little by little walk towards the sound.
10 seconds sound clip from the Mr. Topaze (1961) movie soundboard.
You can hear this line at 00:26:48 in the Blu-ray version of the movie.
Quote context
[...]
- May I tell you something? You are too soft-hearted. You need more discipline.
- Is it because of my little musician you say that?
- You see, I rather like the tune. But unfortunately it completely destroys my authority.
- Yes, it's quite a good idea, but it's not completely fair, because it's based on deception.
- Well, is your little musician completely fair?
- No, but well, he's only a child.
- You do love these children, don't you?
[...]