D#7#5

— About this chord

D#7#5 (Eb7#5) raises the 5th of the dominant chord for a restless, whole-tone-tinged tension, common in jazz turnarounds and blues cadences looking for extra pull toward the tonic. Its augmented color suggests forward motion and unease, making it a favorite passing chord before resolving down a fifth. On guitar the open-B-string grip makes for an easy, ringing voicing; on piano it is often used as a chromatic passing dominant. Also searched as Eb7#5, D#aug7, D-sharp seven sharp five.