What cartoon character sang accentuate the positive?

The cartoon character that sang "Accentuate the Positive" is the beloved cartoon character and musical star, Burl Ives, who voiced the character Sam the Snowman in the classic holiday special "Rudolph the Red-Nosed Reindeer." The song is originally written by Johnny Mercer and Harold Arlen and has been performed by various artists over the years. Sam the Snowman's rendition in the special adds a whimsical and uplifting touch to the storyline.