My 6 year old daughter posed this question. I thought it was great. She also said that she knew her favorites were not the best. Here are my choices, which are not necessarily my favorites:
No particular order:
Robert Plant Freddie Mercury Axl Rose Janis Joplin Paul Rodgers
not my favorite band but Robert Plant vocals just screams rock and roll a very close second(and NO ONE has listed him?) Joe Strummer John Lennon does a few nice turns Chrisse Hynes / Patti Smith
Ian Gillan's vocal capacity as evidenced in his primal wailing and screaming abilities in his prime were perhaps unmatched.
Rock is supposed to be loud, so being the best ever at screaming and wailing must be an important qualification for anyone claiming to be the best "rock" vocalist ever!
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.