music in 9 Chickweed Lane

Cafe Society
1

I’m sure this bit of music makes the cartoon funnier, but I’m not in a position to figure it out.

Does anyone know what it’s a bit of?

2

“It Ain’t Necessarily So”

3

I thought that looked familiar - that was one of the few pieces of music I had memorized back in High School on the piano (can’t remember a bit of it today)

4

Sweet! I knew it would add something.

Thanks, Biffy.