He is credited with composing a number of Songs often attributed to Ellington including the jazz classics Take The A Train and Satin Doll and three of the most sophisticated selections in the jazz idiom Lush Life, Chelsea Bridge. and Passion Flower. He was also a wonderful arranger and contributed many arrangements to the Ellington orchestra's repertoire . He also is listed as a registered composer with Ellington on a number of Suites including Such Sweet Thunder and Far East Suite.