The B-flat major thirteenth chord (B♭maj13) is a seven-note chord consisting of the notes B♭, D, F, A, C, E♭, and G. It is formed by extending the B♭ major eleventh chord (B♭, D, F, A, C, E♭) with the addition of the thirteenth (G), creating a rich, full, and harmonically complex sound. This chord is commonly used in jazz, fusion, and contemporary music to provide lush textures, sophisticated harmonic color, and a sense of expansive tonal depth. The B-flat major thirteenth chord serves as a versatile tonic or central harmony, offering smooth voice leading, enhancing melodic expression, and adding a vibrant, elegant character that elevates the overall harmonic richness of a composition.
Name: B-flat major thirteenth chord
Notes: B♭, D, F, A, C, E♭, G
Intervals: 1, 3, 5, 7, 9, 11, 13
Chord symbol: B♭maj13
Alternative symbols: B♭Δ13, B♭ma13, B♭MA13, B♭M13
Type: Heptad (seven-note chord)
B-flat major thirteenth chord on the Staff
B-flat major thirteenth chord on Piano
B-flat major thirteenth chord on Guitar
B-flat major 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.