... and, of course, it was a Fred Astaire & Ginger Rogers classic from The Gay Divorcee (1934):
It has a passion, The Continental,
An invitation to moonlight and romance.
It's quite the fashion, The Continental,
Because you tell of your love while you dance.
Your lips whisper so tenderly.
Her eyes answer your soul!
Two bodies swaying, The Continental,
And you are saying just what you're thinking of.
So keep on dancing, The Continental,
For it's a song of romance and of love.
You kiss while you're dancing.
The Continental, hmmmmm. It's continental.
You sing while you're dancing.
Your voice is gentle, so sentimental.
You know before this dance is through
That you're in love with her and she's in love with you.
You will find while you're dancing
That there's a rhythm in your heart and soul,
A certain rhythm that you can't control,
And you will do The Continental all the time.