The F-flat diminished seventh chord is a highly tense and dramatic chord composed of the notes F♭, A𝄫, C𝄫, and E𝄫♭. By stacking minor thirds to create a fully diminished seventh, this chord generates an intense sense of instability and anticipation, often leading naturally to resolution in a progression. The F-flat diminished seventh chord is widely used in classical, jazz, and contemporary music to evoke suspense, facilitate smooth modulations, and add a dark, sophisticated color that enhances the emotional impact of a composition.
Name: F-flat diminished seventh chord
Symnonyms:: F-flat fully diminished chord
Notes: F♭, A𝄫, C𝄫, E𝄫♭
Intervals: 1, ♭3, ♭5, 𝄫♭7
Chord symbol: F♭o7
Alternative symbols: F♭dim7, F♭dim, F♭o
Type: Tetrad (four-note chord)
F-flat diminished seventh chord on the Staff
F-flat diminished seventh chord on Piano
F-flat diminished seventh chord on Guitar
F-flat 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.
