Thanks Jim , that's what I was hoping for . I have just been listening to some Mongolian singers and they use all the cavities from chest to head and can sing several notes at the same time to harmonise.
I am interested as to whether 'nasal' singing was looked down on because art singing was opera based and it was a clas and aesthetic issue.
I agree that indoor singing by a sean nos singer is different from what would be needed at a fair or busy market.
Again, why did/do so many revivalists get it wrong?