Instrumentation: 3 horns (trumpet or alto sax, alto or tenor sax, trombone or tenor sax) & rhythm section. Used as the signature tune of the Ellington Orchestra, the title of this great standard refers to the New York City subway line that young Billy Strayhorn took into Harlem's Sugar Hill district in 1938 when Duke hired him to write for his band. Featuring a traditional bright swing groove and an open solo section, this version will delight audiences of all ages. Rhythm section parts are partially notated with chords cued.