Best Male Singers of the 20th Century

Nat King Cole. Not for nothing that "King" was put there. Louis Armstrong. Ray Charles. Listening to these 3 maestros, I understand one definition of genius: a genius makes doing something complicated seem simple and effortless. Like Leonhard Euler who could compute to 34 decimal precision in his head.

Why don't you check out James Mcmurtry Childish Things or Live at Augat Three. Trust me on this one.

How about great underappreciated male singers of the 20th century?

General Johnson provided the unforgettable stuttered vocal on "Give Me Just A Little More Time" By Chairman of The Board. He also sang lead for The Showmen on "It Will Stand", "39-21-41 Fit", and "This Misery", among others. He also wrote and sang the original version of "Patches" one of the great sappy guilty pleasures of the '70's.

Not a great voice, but from late '50's doo wop, through '70's Motown-esque soul-pop, into straight schlock pop and even now, this guy made good (and often not so good) songs truly memorable by virtue of his interpretation.

Nat King Cole and Mel Torme.

I don't know about the best, as this is a complicated question, but one name that comes to mind rather quickly is George Michael. Check out his cd "songs from the last century."