WAV,
style does play some part,which is why thislose the essence
http://www.youtube.com/watch?v=0gHTw9XjKMc http://www.youtube.com/watch?v=0gHTw9XjKMchttp://www.youtube.com/watch?v=0gHTw9XjKMc
but it is not just the inapproprate harmonies,but the style of the singing.
however you are wrong,in condemning all harmony.
drones and harmony have been used for centuries in folk music.