C Altered Guitar Scale
Guitar scale in DADGAD tuning — fretboard diagram
C Altered in DADGAD — Notes and Intervals
The C Altered scale is the ultimate dominant scale in jazz. On Guitar, its notes are C, Db, D#, E, F#, Ab, Bb. It contains every possible altered tension, making it sound extremely dissonant and complex. It is used by professional improvisers to create maximum tension over a dominant chord before a satisfying resolution. Commonly used in Jazz, Fusion, Post-Bop, Contemporary. Notable players include John Coltrane, Michael Brecker, Pat Metheny, Chick Corea. Use over 7alt, 7#9, 7b9, 7#5, 7b5 chords. The definitive scale for altered dominant chords that resolve to minor. Play C Altered over C7alt resolving to Fm.
Notes: C, Db, D#, E, F#, Ab, Bb
Intervals: 1P, 2m, 2A, 3M, 4A, 6m, 7m
Degrees: 1 b2 #3 4 #5 b6 b7
Formula: H-W-H-W-W-W-W
Number of notes: 7
Tuning: DADGAD (D-A-D-G-A-D)
Also known as: super locrian, diminished whole tone, pomeroy
About DADGAD Tuning
DADGAD tuning creates an open Dsus4 chord when strummed open, producing a hauntingly beautiful, droning sound that has become synonymous with Celtic folk music and modern acoustic songwriting. The tuning's natural resonance and overtones make even simple fingerpicking patterns sound rich and complex.
Popularized by Davey Graham in the 1960s and later championed by Pierre Bensusan and Jimmy Page, DADGAD has become one of the most beloved alternate tunings for acoustic guitarists. Its suspended quality — neither clearly major nor minor — creates an ethereal, meditative atmosphere that invites exploration. The tuning excels at creating drone-based arrangements where open strings ring against fretted notes.
Notable artists: Pierre Bensusan, Jimmy Page, Andy McKee, Davey Graham, Laurence Juber
Best for: Celtic folk, acoustic songwriting, drone-based fingerpicking, and meditative compositions
Musical Character
Contains every possible altered tension (b9, #9, b5, #5) over a dominant chord. It is the ultimate 'tension before resolution' scale — play it on V7 and resolve to I for maximum drama.