I do have a bit of a problem with a lot of yodeling songs, though.

In so many of them - and the Sourdough Slim song is a good example - the main purpose of the song seems to be, hey, look how clever I am at yodeling! You can't do that, can you?

Yodeling is a fascinating and versatile vocal technique, with a long and rich history. So it really shouldn't be used only in songs where the performer is just showing off, singing about yodeling with not much other purpose to the song.