The G dominant seventh sharp ninth chord, often abbreviated as G7(#9), is a five-note chord comprising the notes G, B, D, F, and A♯. This chord is constructed by adding a sharp ninth (A♯) to the G dominant seventh chord (G, B, D, F), resulting in a dissonant and tension-filled sound. The G7(#9) chord is commonly used in various musical genres, including jazz, blues, and rock, to add harmonic complexity and a sense of unresolved tension. Its distinctive sound is characterized by the tritone interval between B and F, combined with the augmented ninth interval between G and A♯, creating a “bluesy” or “funky” quality. The G7(#9) chord often functions as a dominant chord, leading to a resolution on the tonic chord in a progression. Its bold and expressive nature makes it a powerful tool for musicians seeking to evoke a raw, emotional quality in their compositions.
Name: G dominant seventh sharp ninth chord
Symnonyms:: G dominant sharp ninth chord
Notes: G, B, D, F, A♯
Intervals: 1, 3, 5, ♭7, ♯9
Chord symbol: G7(♯9)
Alternative symbols: G7♯9
Type: Pentad (five-note chord)
G dominant seventh sharp ninth chord on the Staff
G dominant seventh sharp ninth chord on Piano
G dominant seventh sharp ninth chord on Guitar
G dominant seventh sharp 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.
