Best Male Singers of the 20th Century


There is an interesting current discussion about the best female vocalists on CD. I have my own ideas about the best male singers (any category) of the 20th Century, but would like to hear other opinions.
sdcampbell
Johnny Hartman, Billy Eckstine, Roy Orbison....all for
pure voice quality.......singers with poorer voices, but
were able to convey emmotion...Chet Baker, Frank Sinatra,
Del Shannon...yes...he even had influence on The Beatles,
ELO...and many others...
Tom Waits - i could go on and on why i think he's the one but i'm too tired to keep typing.
Kubla, Dekay, remember "Nighthawks @ the diner, Emma's 49er, a RdV of strangers..."?
T. Waits when I was still young(er)...
Cheers!