The way you sing don't mean a thing. You'd better stick to your dance.
7 seconds sound clip from the Holiday Inn (1942) movie soundboard.
You can hear this line at 00:07:00 in the Blu-ray version of the movie.
Quote context
[...]
- If you could dance instead of sing, I'd learn to love you somehow.
- If you could sing instead of dance, I'd take you home with me now.
- The way you sing don't mean a thing. You'd better stick to your dance.
- And as for you, your dance won't do. You'll have to sing for romance.
- Singing.
- Dancing
- Not much of a Christmas present for you, is it?
- I mean, both of us walking out on you.
- Don't worry about me, kid. I'll do all right.
[...]