Did you know there is an Austrian style of yodeling. It is done by groups and has a complex polyphonic 16th century polyphonic style--sort of "classical yodeling". I recently heard some samples from a group visiting Australia (whose name I can't remember), but it was beautiful.
BTW that is not a misprint. I meant Austria in the first line and Australia in the fifth. They are so similar.
Do you mean pure yodeling Gary--as opposed to songs with yodeling in them (a la Jimmie Rodgers, the Carter family, and some Nashville folk)?