C#-6(addb9) Minor
The C#-6(addb9) chord is built from the notes C# – E – G# – A# – D.
Piano sound loads on first tap.
Also known as
C#-6(b9)C#-6/9C#mi6/9C#min6(b9)C#min6add9
Chord tones, one by one
C#Root
Root
The fundamental note the chord is built on — C#.
EThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
G#Fifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
A#Extension
Thirteenth (13)
A 13th — full, rich top extension.
DExtension
Flat ninth (♭9)
A ♭9 — sharp, dissonant tension typical of altered dominant chords.
🎼 Related scales
Dorian ♭2 (Phrygian ♮6)melodic minor a major 2nd below
🎹 Modal analysis
This chord implies the Dorian ♭2 (Phrygian ♮6) scale; its characteristic note is the ♭9 / ♭2. It is a mode of the melodic minor a major 2nd below.
🎸 Genres
Modern jazz · Post-bop · Fusion