No Matt ...I don't mean operatic soprano's high A's ...I am talking high A's reached by male singers singing folk songs. ...as in this inspiring performance by John Cowan ...

https://www.youtube.com/watch?v=VvRdUz96WCA .

Fast forward to 1.33 to hear the first sustained high A ( he repeats it several times during the song) . He also hits a high B as a passing note later in the song.

Cowan's high A here is the same as the high A to which I referred in the OP, sung by James Hickman at our club on Wednesday night...non-falsetto, unforced, natural tenor voice.

I will check out GUEST's suggested John Denver videos later when I have time.