I've always been fascinated by Yodeling, any historical info would be great..The difference between styles of Country Western & Bavarian..when do we first find yodeling etc...any trivia would be of interest. Also wold like the words to "Echoing Hills Yodel"...parts:"Oh, the Echoing Hi-ills keep yodeling to me...(oh dee dil o dil dee).. (Repeat yodel with softer voice)..The singer I believe was Elton Britt..Thanks much..Gary!