The B-flat major sixth-ninth chord (B♭6/9) is a rich and expressive five-note chord comprising B♭, D, F, G, and C. It is constructed by adding both the major sixth (G) and major ninth (C) to the B♭ major triad (B♭, D, F), resulting in a chord that blends the stability of the major triad with the added color of the sixth and ninth. This chord is commonly used in various musical genres, including jazz, R&B, and pop, to add a touch of sophistication and emotional depth to chord progressions. The B-flat major sixth-ninth chord is often employed as a tonic or subdominant function, providing a smooth and pleasing harmonic foundation. Its versatility and rich tonal quality make it a valuable addition to a musician’s harmonic vocabulary.
Name: B-flat major sixth-ninth chord
Notes: B♭, D, F, G, C
Intervals: 1, 3, 5, 6, 9
Chord symbol: B♭45906
Alternative symbols: B♭6add9, B♭6(add9)
Type: Pentad (five-note chord)
B-flat major sixth-ninth chord on the Staff
B-flat major sixth-ninth chord on Piano
B-flat major sixth-ninth chord on Guitar
B-flat major sixth-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.