Nat King Cole--

Yes, Nat King Cole was a baritone:

Voice

Cole had a soft, deep, and grainy baritone voice. Some say his voice was pure and that he had perfect pitch.

Known for

Cole is best known for his romantic ballads, including "The Christmas Song," "Mona Lisa," and "Nature Boy".

Influential

Cole is considered one of the most influential vocalists of the 20th century. He was a major figure in American popular music between the end of the big-band era and the rise of rock 'n' roll.

Other accomplishments

Cole was the first African American to host a variety TV series, in 1956. He was also a jazz pianist and formed the King Cole Trio in the late 1930s.