What is Open C tuning?

Open C tuning is C-G-C-G-C-E (low to high). Strumming all strings produces a C major chord. The low C string sits two whole steps below standard E, giving exceptional bass depth.

What scales work in Open C?

C major and C major pentatonic are the most natural choices. C Lydian adds a dreamy, cinematic quality. For heavier styles, C minor and C Phrygian deliver dark intensity.

Do I need heavier strings for Open C?

Yes, the low C string needs a heavier gauge to maintain proper tension — at least a .056 or .058 for the 6th string. A set of 12-56 or similar is recommended. Without heavier strings, the low C will sound muddy and floppy.

C Double Harmonic Major Guitar Scale

Guitar scale in Open C tuning — fretboard diagram

Tuning

Frets

C Double Harmonic Major in Open C — Notes and Intervals

The C Double Harmonic Major scale, commonly known as the Byzantine scale, is a perfectly balanced seven-note scale. On Guitar, it contains the notes C, Db, E, F, G, Ab, B. It offers an extreme exotic tension with two augmented seconds, used to create iconic surf-rock and Middle Eastern themes. Commonly used in Middle Eastern, Surf Rock, Metal, Film Scores. Notable players include Dick Dale, Rainbow, Marty Friedman. Use over major chords in Middle Eastern and surf rock contexts. The b2 and b6 add exotic color to an otherwise major framework.

Notes: C, Db, E, F, G, Ab, B

Intervals: 1P, 2m, 3M, 4P, 5P, 6m, 7M

Degrees: 1 b2 3 4 5 b6 7

Formula: H-WH-H-W-H-WH-H

Number of notes: 7

Tuning: Open C (C-G-C-G-C-E)

Also known as: gypsy

About Open C Tuning

Open C tuning (C-G-C-G-C-E) produces a C major chord when strummed open, with an enormous bass depth from the low C string (two whole steps below standard E). The tuning spans a vast tonal range that gives compositions an almost orchestral scope, making it a favorite for both delicate fingerstyle and crushing heavy music.

John Butler's 'Ocean' — one of the most famous modern fingerstyle compositions — is performed in Open C, showcasing the tuning's incredible dynamic range from thundering bass to shimmering harmonics. Devin Townsend uses Open C extensively across his catalog for its massive, wall-of-sound potential. Jimmy Page used it on Led Zeppelin's 'Friends' from Led Zeppelin III. Soundgarden also explored Open C. The three C strings and two G strings create powerful octave resonances that make even simple chord shapes sound huge.

Fingerstyle AcousticProgressive Rock/MetalPost-RockFolkExperimental

Notable artists: John Butler, Devin Townsend, Jimmy Page (Led Zeppelin), Soundgarden, William Ackerman

Best for: Cinematic fingerstyle compositions, progressive metal walls of sound, post-rock textures, and any music that needs enormous tonal range from deep bass to bright treble

Musical Character

ExoticIntenseBalancedEastern

Contains two augmented 2nd intervals placed symmetrically, giving it a perfectly balanced exotic tension. Dick Dale used it to create the iconic surf rock 'Misirlou' guitar tone.

Explore This Scale in Other Tunings

← All Guitar scales in Open C tuning