Although best known for her bel canto and opera seria roles, Horne also sang much American music, both contemporary music by composers such as William Bolcom, and traditional popular songs. She can be heard on the soundtrack of the 1961 film "Flower Drum Song" singing "Love, Look Away" and she sang the role of Lady Thiang on the Philips recording of "The King and I" starring Julie Andrews and Ben Kingsley. She had previously sung in the women's chorus for the 1956 film version of "The King and I".