The B-flat dominant thirteenth chord (B♭13) is a seven-note chord consisting of the notes B♭, D, F, A♭, C, E♭, and G. It is formed by extending the B♭ dominant seventh chord with the addition of the ninth (C), eleventh (E♭), and thirteenth (G), resulting in a rich and highly colorful harmony. This chord is commonly used in jazz, funk, and contemporary music to provide a sophisticated and expansive sound that adds tension and resolution within chord progressions. The B-flat dominant thirteenth chord serves as a dominant function, naturally leading to the tonic, while its extended tones create lush textures and enhance melodic improvisation. Its complex structure and vibrant tonal quality make it an essential chord for musicians seeking depth and expressive harmonic possibilities.
Name: B-flat dominant thirteenth chord
Notes: B♭, D, F, A♭, C, E♭, G
Intervals: 1, 3, 5, ♭7, 9, 11, 13
Chord symbol: B♭13
Type: Heptad (seven-note chord)
B-flat dominant thirteenth chord on the Staff
B-flat dominant thirteenth chord on Piano
B-flat dominant thirteenth chord on Guitar
B-flat dominant thirteenth 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.