[1] King became the band leader of the Burns and Allen Campbell's Tomato Juice program Adventures of Gracie in 1936, and his first appearance was on September 2 that year.

[7] When Burns and Allen left CBS for NBC and a new show sponsored by Grape Nuts at the end of March 1937, King did not follow them on radio, but took on an extended appointment at the Palmer House in Chicago instead.

[7] Later in his career, he modified his style to focus on Latin American-influenced music, becoming an early-adopter of rhumba and samba rhythms.

[9] King died in Houston, Texas,[3] on August 8, 1974, following a lengthy period of poor health.

[6] King was reviewed as a superior emcee, presenting acts in a low-key manner that best suited his style.