Can you identify this movie?

I saw a clip of a B/W movie, and the only scene that I can remember is some (black) porters in a train car singing a song with some lyrics like “Come on, children, hustle down the road,” and “It’s the early bird that catches the worm.”

They are singing to a white couple in the car.

Any ideas???

No, but I’m betting we can rule out Spike Lee.