Whistle and Blow Your Blues Away (1933) - Bosko in Person 

Also plays in Bosko's Dog Race
Also the theme of Looney Tunes from "Bosko the Drawback" to "Bosko's Picture Show"
Written by Carmen Lombardo and Joseph Young
Arrangement by Frank Marsales
Cartoon Lyrics:
Here’s how to make things okay;
Just whistle! Whistle!
Ho-ho! Now that’s okay!
Just whistle and blow your blues away!
Fuck.