Here's another Betty Boop "musical," this one featuring the Hawaiian music of "The Royal Samoans." You have to give the people responsible for these Boop cartoons - the Fleischer brothers, mainly - credit for giving musicians another forum to show their talents. They weren't biased, either, showing anybody from Louis Armstrong to classical violinist Rubinoff.
The music in here is excellent, too, especially some of the guitar work. They always have the characters in sync with the notes, too. Here, we see Betty doing her risqué hula dance and "Bimbo" imitating an island native singing a number, too.
You also get some the craziest visuals you'll ever seen. Betty's cartoons for good in that department. You just never know what absolutely crazy thing you'll see next. For instance, the motor of a small boat suddenly turns into dog, or the boat becomes a house that walks away - just insane stuff. Personally, I think it's all fascinating.