The B-sharp major thirteenth chord is a highly expressive and harmonically rich chord consisting of the notes B♯, D𝄪, F𝄪, A𝄪, C𝄪, E♯, and G𝄪. Built on a major seventh chord and extended with the ninth, eleventh, and thirteenth, it produces a lush and expansive sound that is both bright and sophisticated. The B♯ provides the root, the D𝄪 defines the major third that establishes its uplifting quality, the F𝄪 adds stability with the perfect fifth, the A𝄪 introduces the major seventh for warmth, the C𝄪 enriches the harmony with the ninth, the E♯ contributes the eleventh, and the G𝄪 completes the chord with the thirteenth, adding depth and color. The B-sharp major thirteenth chord is often used in jazz, soul, and contemporary music to create complex, elegant progressions that evoke richness and emotional intensity.
Name: B-sharp 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-sharp major thirteenth chord on the Staff
B-sharp major thirteenth chord on Piano
B-sharp major thirteenth chord on Guitar
B-sharp 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.
