Nat King Cole - The smooth jazz pianist and singer is often quoted as being one of the greatest artists to mix jazz and pop. Ballads such as 'Unforgettable' are indeed unforgettable.
Bing Crosby - Crosby was a multi-talented star with a successful career as both an actor and singer. Bing Crosby's bass-baritone voice can be heard in classics such as 'White Christmas.'
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Dean Martin - The "King of Cool" will forever be remembered as a legendary crooner. His smooth serenating voice in romantic songs such as 'That's Amore' is as iconic as it gets.
Charles Aznavour - Charles Aznavour was known for his signature vibrato and tenor voice. He has been dubbed "the French Frank Sinatra."
Eddie Fisher - Eddie Fisher had a successful career as an actor, TV presenter, and as a singer. His charismatic voice made him one of the greatest crooners of his era.
Al Martino - Al Martino's baritone voice made fans' hearts skip a beat. He has been called "one of the great Italian American pop crooners."
Jerry Vale - The Italian-American crooner sang ballads like no other, in both English and Italian. Jerry Vale's songs went on to feature in some of Martin Scorsese's movies.
Frankie Laine - Frankie Laine mixed elements of jazz, blues, and pop in his songs. Songs like 'I Believe' and 'That's My Desire,' among others, certainly deserve a listen.
Matt Monro - The English singer known as "The Man with the Golden Voice" had a gorgeously smooth voice indeed. Monro is definitely one of the greatest British crooners of all time.
Bobby Darin - Darin started his career as a rock and roll artist, but it was his renditions of classics such as 'Beyond the Sea' that secured him a place on this list.