A good one David,
I tend go agree, in fact I am constantly amazed at the number of famous musicians from hereabouts, you omitted a few such as Whitney Houston (and I initially thought Tiny Tim) but no it is only his widow or one of his ex wives who lives in NJ now.
But of course it has to be said that the UK as a percentage of population and legitimately as "one place" easily tops the ratings especially for setting trends.
Tejas hasn't done bad either Buddy Holly in particular without whom the whole British Invasion of the early 60's would never have happenned. You mentioned Tennessee which produced possibly the biggest star;
she who once said it costs a lot of money to look this bad, plus the Everlys
OK you can take your tongue out of your cheek now!!