First, it's a dudette and John was born in New Mexico.
Maybe this helps:
Wasn't implying where Denver was born -- just mentioning a name that has national and international fame -- household word, so to speak.
When I think national/international fame -- names like Elvis, Paul McCartney, Jimi Hendrix, Springsteen, Sinatra --those are household words. Other than some starving kid in India, everybody on the planet knows who they are. Hell, even the Taliban knows who they are.
I watched the video you posted of the dudette -- never heard it, never seen it, and have no desire to watch it again.
BTW, I've never heard of the Fireballs either -- can we replace that with John Denver...? Hey, he was born in Roswell, and liked to fly -- hmmm...