How is “a song and dance” used?

In Double Indemnity (1944), one line is: “But you never fooled me with your song and dance. Not for a second.”

Which movie is “a song and dance” from?

The clip at the top of this page is from Double Indemnity (1944).

if you make a song and dance about sth, you complain or talk about it too much when this is not necessary

informal · British · disapproving · American · Heard in 2 movies

1
a song and dance (about sth)disapprovingBritish
if you make a song and dance about sth, you complain or talk about it too much when this is not necessary
2
a song and dance (about sth)American
a long explanation about sth, or excuse for sth

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

But you never fooled me with your song and dance. Not for a second.

Said in 7 films · #1