The A-flat diminished chord is a tense and dramatic chord consisting of the notes A♭, C♭, and E𝄫. As a diminished triad, it creates a sense of instability and suspense, making it ideal for building tension and leading to resolution within musical progressions. Commonly used in classical, jazz, and contemporary music, the A-flat diminished chord adds a dark and mysterious color to compositions, offering a unique harmonic texture that heightens emotional impact and enriches the overall sound.
Name: A-flat diminished chord
Symnonyms:: A-flat diminished triad
Notes: A♭, C♭, E𝄫
Intervals: 1, ♭3, ♭5
Chord symbol: A♭o
Alternative symbols: A♭dim, A♭m(♭5), A♭m♭5
Type: Triad (three-note chord)
A-flat diminished chord on the Staff
A-flat diminished chord on Piano
A-flat diminished chord on Guitar
A-flat diminished 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.
