- Who's the musician in the family?
- My brother Ned.

3 seconds sound clip from the Holiday (1938) movie soundboard.

You can hear this line at 00:18:47.702 in the Blu-ray version of the movie.

Quote context

[...]

- She was marvelous.

- That's quite a doll.

- That was Julia's.

- Yeah?

- She loved it. My, how she loved it.

- Looks like her.

- Oh, did she love that too?

- Now, don't you say a word about Leopold. He's very sensitive.

- Yours?

- Looks like me.

- Who's the musician in the family?

- My brother Ned.

- I think I saw him this morning when I first arrived. At least I saw somebody with a hangover.

- That was Ned. He could have been a fine musician.

- What do you mean, could have been?

- If Father hadn't interfered.

- Who performed on the flying trapeze?

- Oh, all of us. And a terrible cousin of ours named Seton Cram.

[...]