Looking for some 1950's or 60's lesser known crooners.

[Montycat]

Frankie Laine

 

[Mystic]

Provided you're not wed to hearing English-language only, I recommend Charles Trenet.

note: while lesser known in the U.S., that is not the case in Europe

 

[chuckworkb]

Once again folks, thanks for all the great suggestions. Lots of amazing voices to listen to.

 

[jgannon]

Johnny Ray...

 

[truetone36]

Another non-English performer would be Ivo Robic, who had a worldwide hit in 1959 with "Morgen".

 

[sKiZo]

As long as we're on the subject ... Marlene Dietrich ... the epitome of sultry ...