Ella Fitzgerald Sings the Duke Ellington Song Book is a 1957 studio album by the American jazz singer Ella Fitzgerald, accompanied by Duke Ellington and his orchestra, focusing on Ellington's songs. Part of Fitzgerald's "Song Book" series, it is the only one where the composer is also featured as a performer and the first occasion Fitzgerald recorded with Ellington. It is also the entry in the Song Book series that provided her with the most opportunities to exhibit her skill at scat singing.