The B-flat dominant ninth chord (B♭9) is a five-note chord consisting of the notes B♭, D, F, A♭, and C. It is constructed by adding a major ninth (C) to the B♭ dominant seventh chord, resulting in a chord that blends the stability of the major triad with the added tension of the seventh and the color of the ninth. This chord is commonly used in various musical genres, including jazz, blues, and rock, to create a sense of tension that resolves to the tonic chord. The B-flat dominant ninth chord is often employed as a dominant function, providing a strong harmonic pull towards the tonic chord and adding a sense of anticipation and resolution to chord progressions. Its versatility and rich tonal quality make it a valuable addition to a musician’s harmonic vocabulary. The inclusion of the ninth adds a unique flavor, distinguishing it from other dominant seventh chords and enhancing its expressive potential. When played on the guitar, the B♭9 chord can be formed by barring the first fret and positioning the remaining fingers to form the specific intervals. Its distinctive sound has become a hallmark of many classic jazz and blues compositions.
Name: B-flat dominant ninth chord
Notes: B♭, D, F, A♭, C
Intervals: 1, 3, 5, ♭7, 9
Chord symbol: B♭9
Type: Pentad (five-note chord)
B-flat dominant ninth chord on the Staff
B-flat dominant ninth chord on Piano
B-flat dominant ninth chord on Guitar
B-flat dominant 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.