E diminished seventh chord is an intense and highly dissonant harmony built from the notes E, G, B♭, and D♭, created by stacking minor thirds above the root. This symmetrical structure produces a dark, unstable sound that conveys a strong sense of tension and anticipation, making it one of the most dramatic chords in tonal music. Because of its ability to resolve in multiple directions, the E diminished seventh chord is frequently used in classical, jazz, and theatrical music to heighten suspense, create unexpected transitions, and add emotional depth to harmonic progressions.
Name: E diminished seventh chord
Symnonyms:: E fully diminished chord
Notes: E, G, B♭, D♭
Intervals: 1, ♭3, ♭5, 𝄫7
Chord symbol: Eo7
Alternative symbols: Edim7, Edim, Eo
Type: Tetrad (four-note chord)
E diminished seventh chord on the Staff
E diminished seventh chord on Piano
E diminished seventh chord on Guitar
E diminished seventh chord on Ukulele
Rowan Ellis is a musician and educator with a passion for exploring the language of harmony and melody. With years of experience across classical, jazz, and contemporary styles, Rowan breaks down music theory into clear, practical insights. His goal is to make chords and scales less intimidating and more inspiring for every musician.