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
I am starting to feel Eddie Vedder is our best rock singer. Lightning Bolt tour is a defining moment on how well his voice has matured.
A tie for me, both jazz guys: Mark Murphy and Johnny Hartman. Such different styles, so both are the best to me.
I know a totally unknown local tenor in the Baltimore MD area who performs locally that has the purest tone of anyone I have ever heard that I can think of.