C Half-whole Diminished Guitar Scale — Open D
Guitar scale in Open D tuning — fretboard diagram
C Half-whole Diminished in Open D — Notes and Intervals
The C Half-whole Diminished scale is a symmetrical scale that is an essential tool for jazz players. On Guitar, the notes are C, Db, Eb, E, F#, G, A, Bb. 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: C, Db, Eb, E, F#, G, A, Bb
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: Open D (D-A-D-F#-A-D)
Also known as: dominant diminished, messiaen's mode #2
About Open D Tuning
Open D tuning (D-A-D-F#-A-D) produces a full D major chord when strummed open, creating a warm, resonant sound that has been a staple of slide guitar, folk, and acoustic music for over a century. The three D strings create a deep, droning foundation that makes even simple chord shapes sound lush and full.
Open D is closely related to Open E (same intervals, just a whole step lower) but puts less tension on the guitar neck, making it safer for acoustic instruments. It was a favorite of Joni Mitchell, who used it extensively for her unique chord voicings, and Bob Dylan, who popularized it in folk-rock. For slide players, Open D provides the same intuitive major-chord-at-any-fret approach as Open G but with a warmer, deeper character.
Notable artists: Joni Mitchell, Bob Dylan, Richie Havens, Bruce Cockburn, Elmore James
Best for: Slide guitar, folk fingerpicking, singer-songwriter arrangements, and acoustic compositions with rich open-string resonance
Explore This Scale in Other Tunings
- C Half-whole Diminished in Standard Tuning
- C Half-whole Diminished in Drop D
- C Half-whole Diminished in DADGAD
- C Half-whole Diminished in Open G
- C Half-whole Diminished in Baritone (B Standard)
- C Half-whole Diminished in 7-string
- C Half-whole Diminished in 8-string
- C Half-whole Diminished in Drop C
- C Half-whole Diminished in Drop B
- C Half-whole Diminished in Half Step Down
- C Half-whole Diminished in Open E
- C Half-whole Diminished in Open A
- C Half-whole Diminished in Double Drop D
- C Half-whole Diminished in Open C