Festus, had you asked me this question 30 years ago I would've said: Robert Plant, Greg Lake, Ian Anderson, Jon Anderson (maybe), Ann Wilson, Jim Morrison, David Gilmore.

I have a little trouble with the term "Classic Rock" though. I'm sure this is a classification created by the industry to prop up some of the Old Glory bands of a bygone era, and a way for the broadcast medium to create more radio stations that play Classic Rock, and thus increase revenue ( ), but back in the day it was just plain ol' Rock-n-Roll.

Nevertheless, I'd say the person who's voice has remained distinctive as well as having transcended all generations of vocalists since the 60's & 70's is David Gilmore. My CD and concert DVD collection has become Pink Floyd top-heavy, and it's because I associate his voice with a LOT of the memories I have of the days when Rock-n-Roll was still fresh and and taking many forms.

(Please forward this note along to Nurse Ratchett so when it's time for me to take up residence with you at Happy Acres, she'll know what soothes this savage beast.)