The best I've heard in this area is Christian Zehnder, who has cleverly woven his national Swiss tradition into it. I'd like to open some discussion about this topic- any experience with overtone yodeling or fresh new ideas?
Anyway, in a yodel surfing expedition, found this completely amazing blog site 'Yodel Heaven', which has a huge amount of rare (downloadable!) mp3s from all over the world, including a bunch of overtone and throat singing tracks. (Hint) You'll find Arthur Miles there too!
http://mademoisellemontana.wordpress.com/
