The G-flat major thirteenth chord is a highly extended and harmonically rich chord consisting of the notes G♭, B♭, D♭, F, A♭, C♭, and E♭. By adding the thirteenth (E♭) to the G♭ major eleventh chord, this chord creates a full, lush, and sophisticated sound that combines brightness, tension, and harmonic depth. Frequently used in jazz, fusion, and contemporary music, the G-flat major thirteenth chord allows musicians to explore complex chord voicings, smooth voice-leading, and expressive progressions, making it a powerful tool for adding richness, color, and nuance to compositions.
Name: G-flat major thirteenth chord
Notes: G♭, B♭, D♭, F, A♭, C♭, E♭
Intervals: 1, 3, 5, 7, 9, 11, 13
Chord symbol: G♭maj13
Alternative symbols: G♭Δ13, G♭ma13, G♭MA13, G♭M13
Type: Heptad (seven-note chord)
G-flat major thirteenth chord on the Staff
G-flat major thirteenth chord on Piano
G-flat major thirteenth chord on Guitar
G-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.