The B dominant minor ninth chord, commonly notated as B7♭9, is a five-note chord that builds upon the standard B dominant seventh by adding a minor ninth interval. Its notes are B (root), D♯ (major third), F♯ (perfect fifth), A (minor seventh), and C (minor ninth), creating a tense and expressive harmonic texture. The inclusion of the minor ninth above the root adds dissonance and color, making this chord particularly effective in jazz, blues, and fusion styles where rich, complex harmonies are desired. Functionally, the B dominant minor ninth chord often serves as a V7 chord with an altered ninth, leading to strong resolutions and adding emotional depth to progressions. Guitarists and pianists frequently use it to create dramatic tension, as the interplay between the major third, minor seventh, and minor ninth produces a sound that is simultaneously grounded and unsettled, enhancing the expressive possibilities within a musical piece.
Name: B dominant minor ninth chord
Notes: B, D♯, F♯, A, C
Intervals: 1, 3, 5, ♭7, ♭9
Chord symbol: B7(♭9)
Alternative symbols: B7♭9
Type: Pentad (five-note chord)
B dominant minor ninth chord on the Staff
B dominant minor ninth chord on Piano
B dominant minor ninth chord on Guitar
B dominant minor ninth 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.