Yodel Stroll through History - tracing yodeling from Europe to the Americas with outshoots into country and jazz specifically. Hard to find the straight stuff but I like the additional, occasional spontaneous burst of vocal trilling. I think it's a given that just about all the old country artists did a least a song or two with yodeling. You might want to check with Nashville Grand Ole Opry archives. Sorry I don't have an address. You might also want to check out a group out of Arizona called Igor's Jazz Cowboys. Think late 1800's U.S Calvary dressed types playing western swing/jazz. They have a couple of yodeling type of songs and Igor (lead) would be a good resource of names/groups that yodel/yodeled (read since deceased). They have a fan club but I'm not sure if they have a website...yet.