julius i found your post infored and refreshing regarding yodeling in US and the origins of yodeling. i am finishing my second book on yodeling YODEL IN HIFI and most certainly yodeling originated in africa as the birthplace of mankind. i tackled this a bit in my first book but go deeper in book 2. also the origins of North American yodeling are certainly as melting pot as anything else - native tribes, black slaves, scandinavians, early mennonites, german-swiss immigrants. i also cover basque and north african yodel-like ululations. am interested in peru and tibet. i have many examples of asian yodeling and even latin american but not from either of those 2 countries.