The D half-diminished seventh chord, also known as Dm7♭5, is a four-note chord comprising the notes D, F, A♭, and C. It is constructed by lowering the fifth of a D minor seventh chord by a half step, resulting in a diminished fifth (A♭) instead of a perfect fifth (A). This chord is often used in jazz and classical music, particularly in minor key ii-V-I progressions, where it functions as a predominant chord leading to the dominant. The Dm7♭5 chord’s unique sound, characterized by its diminished fifth and minor seventh intervals, adds a distinct flavor to harmonic progressions. On the guitar, it can be played in various positions, with common voicings involving barring the first fret and positioning the other fingers to form the chord shape. The Dm7♭5 chord’s versatility and emotional depth make it a valuable addition to any musician’s repertoire.
Name: D half-diminished seventh chord
Symnonyms:: D half-diminished chord, D minor seventh flat five chord
Notes: D, F, A♭, C
Intervals: 1, ♭3, ♭5, ♭7
Chord symbol: Dm7(♭5)
Alternative symbols: Dø, Dø7, Dm7♭5, D–7(♭5), Dmi7(♭5), DminDmin
Type: Tetrad (four-note chord)
D half-diminished seventh chord on the Staff
D half-diminished seventh chord on Piano
D half-diminished seventh chord on Guitar
D half-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.