The F diminished seventh chord is an intensely dissonant and dramatic chord that adds a strong sense of tension and instability to music. Built from the notes F, A♭, C♭, and E𝄫, it consists entirely of stacked minor thirds, giving it a symmetrical structure and a dark, unresolved quality. This unique construction allows the F diminished seventh chord to create suspense and mystery, making it a powerful tool in classical, jazz, and film music for leading into dramatic resolutions or modulations. Its haunting and unstable sound makes it especially effective in building anticipation and emotional intensity within a progression.
Name: F diminished seventh chord
Symnonyms:: F fully diminished chord
Notes: F, A♭, C♭, E𝄫
Intervals: 1, ♭3, ♭5, 𝄫7
Chord symbol: Fo7
Alternative symbols: Fdim7, Fdim, Fo
Type: Tetrad (four-note chord)
F diminished seventh chord on the Staff
F diminished seventh chord on Piano
F diminished seventh chord on Guitar
F 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.