Chelsea Bridge is an impressionistic jazz composition written by Billy Strayhorn in 1940, one of his earliest masterpieces created for the Duke Ellington Orchestra. Strayhorn composed the piece alongside Mercer Ellington during a period when Duke Ellington urgently needed new material due to a radio boycott of ASCAP-licensed songs. The title references a London landmark Strayhorn never actually visited; he drew inspiration from what he believed was a James McNeill Whistler painting, though scholars have noted the artwork more likely depicts the nearby Old Battersea Bridge. The composition opens with a distinctive four-bar piano introduction built on parallel broken major-seventh ninth chords, establishing a dreamy, non-tonal atmosphere closer to Debussy or Ravel than to conventional swing. Melodic similarities to Ravel's Valse No. 2 have been observed. Notably, the ensemble passages were originally performed without vibrato, a stylistic choice that prefigured the cool jazz movement and the restrained aesthetic later associated with Miles Davis. The original 1941 recordings by the Ellington Orchestra featured bass interludes tailored specifically for Jimmie Blanton and tenor saxophone work by Ben Webster, whose playing on the piece has been compared to Ravel and Debussy in its tonal refinement. The composition has since attracted interpretations from pianists including Tommy Flanagan, Keith Jarrett, and Andy LaVerne, cementing its place as one of the most revered ballads in the jazz repertoire.