A Half-whole Diminished Guitar Scale
Guitar scale in Drop D tuning — fretboard diagram
A Half-whole Diminished in Drop D — Notes and Intervals
The A Half-whole Diminished scale is a symmetrical scale that is an essential tool for jazz players. On Guitar, the notes are A, Bb, C, C#, D#, E, F#, G. It provides a sophisticated dissonant crunch when played over dominant seventh chords, allowing for complex, high-tension solos that still feel structured. Commonly used in Jazz, Bebop, Fusion, Film Scores. Notable players include Charlie Parker, Joe Pass, Pat Martino, George Benson. Use over dominant 7th chords (7, 7b9, 13b9). The jazz standard for creating structured tension over dominant harmony. Works over 4 roots spaced a minor 3rd apart.
Notes: A, Bb, C, C#, D#, E, F#, G
Intervals: 1P, 2m, 3m, 3M, 4A, 5P, 6M, 7m
Degrees: 1 b2 b3 4 #5 6 7 b8
Formula: H-W-H-W-H-W-H-W
Number of notes: 8
Tuning: Drop D (D-A-D-G-B-E)
Also known as: dominant diminished, messiaen's mode #2
About Drop D Tuning
Drop D tuning lowers the 6th string from E to D, giving you instant access to heavy power chords with a single finger. This deceptively simple change opens up a world of heavier riffs, deeper bass notes, and new chord voicings that are impossible in standard tuning. The low D string creates a powerful foundation for rhythm playing while keeping the rest of the fretboard familiar.
Drop D is one of the most versatile alternate tunings in modern music. From the crunchy riffs of grunge and alternative rock to the thunderous breakdowns of metal, this tuning has shaped the sound of countless iconic songs. It's also surprisingly useful for fingerpicking and acoustic arrangements where you need a deep bass drone.
Notable artists: Foo Fighters, Soundgarden, Rage Against the Machine, Tool, Killswitch Engage
Best for: Power chords, heavy riffs, drop-tuned metal rhythm, and acoustic arrangements with a deep bass drone
Musical Character
The inverse of the whole-half diminished — starts with a half step. This version is the standard jazz choice over dominant 7th chords, providing a sophisticated 'crunch' that resolves beautifully.
Chord Progressions Using This Scale
- I – ♯I°7 – ii – V (Diminished Cliché)Jazz / Soul — Nostalgic & Vintage
Explore This Scale in Other Tunings
- A Half-whole Diminished in Standard Tuning
- A Half-whole Diminished in DADGAD
- A Half-whole Diminished in Open G
- A Half-whole Diminished in Baritone (B Standard)
- A Half-whole Diminished in 7-string
- A Half-whole Diminished in 8-string
- A Half-whole Diminished in Drop C
- A Half-whole Diminished in Drop B
- A Half-whole Diminished in Open D