I said "FAIRLY evenly", S.; and right now I'm listening to the National Mods, from Scotland, on BBC Rn Gael, where the folk singing is, indeed, all fairly even - there is certainly no Bon Jovi (Ed) like belting.
And American pop/rock has been copied by the citizens of many other countries - sadly, I think (even though I don't mind listening to the likes of Bon Jovi, e.g.). If we love our world being multicultural, we appreciate other cultures and perform OUR OWN (from here).
Stu: I've missed your in-depth analysis...and I'm still missing it!