Who's your candidate? Could be from anything. Solo, bands, dead, alive, anyone who sings. Freddie Mercury! So, he was fruiter than 8 guys blowing 9 nine guys. Eh? Mother fucker could sing!
I'd say Jonathan Davis because he can put alot of emotion into it and reach many different pitches. He has a style all his own. Hes creative and talented. There are many talented singers, hes just my favorite.
Some of my favorites have already been mentioned, but to add... Ian Anderson Sebastian Bach James Hetfield George Thorogood Gotta love Freddie Mercury, ...the show must go on....
Well, I am shocked and disappointed no one has mentioned Grace Slick of Jefferson Airplane. The track that truly shows her power and soul is White Rabbit, though it is definately the bands most cliche song.