Sam Levene

[IMDB on Sam Levene]: Although Levene created the role of Nathan Detroit in the original Broadway production of "Guys and Dolls" in 1950, he did so with a decided handicap for a musical comedy leading man: He couldn't sing. His one solo number, "Sue Me," was deliberately written in only one octave, and when he had to sing in an ensemble number, such as "The Oldest Established," he mimed the words.