Monkeys upon a tree never are very blue. They never seem to be under par, that is true.
10 seconds sound clip from the The Cocoanuts (1929) movie soundboard.
You can hear this line at 00:50:26.890 in the DVD version of the movie.
Quote context
[...]
- Help me put this deal over, you can have anything you got.
- Be alert. That's it. Be alert. Be alert, or papa don't go out at all.
- All right, I be alert. I don't know what it is, but I be it.
- All ye suckers who are gonna get trimmed, step this way for the big swindle.
- Monkeys upon a tree never are very blue. They never seem to be under par, that is true.
- Not like the ones you see on a bar in the zoo. Monkeys upon a tree do the monkey doodle doo.
- Oh, among the mangoes where the monkey gang goes you can see them do the little monkey doodle doo.
- Oh, a little monkey playing on his one key gives them all the cue to do the monkey doodle doo.
- Let me take you by the hand over to the jungle band.
[...]