Swing low? Sweet chariot?
4 seconds sound clip from the Blazing Saddles (1974) movie soundboard.
You can hear this line at 00:04:20 in the Blu-ray version of the movie.
Quote context
[...]
- Now, come on, boys, where's your spirit? I don't hear no singing.
- When you were slaves, you sang like birds. Go on. How about a good old nigger work song?
- Some get a kick from cocaine.
- Well, how about De Camp Town Ladies?
- Gonna run all night, gonna run all day. Bet my money on the bobtailed nag, somebody bet on the bay!
[...]