Podcast from the University of North Texas Music Library highlighting materials from their collections. This episode describes five major collections of materials related to Duke Ellington, including multiple sound recordings which are unreleased according to available discographical information: Ellington at the Paramount Theater, April 30, 1947; Ellington on WWDC radio, April 21, 1946; Ellington interviewed by Willis Conover, March 27, 1948; Ellington interviewed by Willis Conover, September 5, 1973; Swedish telecast, February 7, 1963; Goteborg, Sweden, November 6, 1958; Milan, Italy, January 15, 1967.