Gary; Check out Shirley Field, a BC "Cowboy" yodeler who is the NA champion. She has several CDs and tapes out and instructional books and tapes. She lives in Armstrong, B.C. She performs at many of the Cowboy Poetry gatherings. You might find her through the BC Cowboy Heritage society in Kamloops B>C. Of course there is lots of Austrian music recording around with yodeling. There is a yearly contest. Not sure how to check it out.