What is Open A tuning?

Open A tuning is E-A-E-A-C#-E (low to high). Strumming all strings produces an A major chord. It's structurally the same as Open G but one whole step higher.

Is Open A the same as Open G with a capo?

Yes, musically they are identical — Open G with a capo at fret 2 gives you the same pitches as Open A. Many players use this approach. Without a capo, Open A has higher string tension which some slide players prefer for better control.

What scales work in Open A?

The A major pentatonic and A blues scale are natural choices. A Mixolydian gives a bluesy feel, and the A major scale works for country and folk styles.

C Major Blues Guitar Scale

Guitar scale in Open A tuning — fretboard diagram

Tuning

Frets

C Major Blues in Open A — Notes and Intervals

The C Major Blues scale is an extension of the major pentatonic that adds a blue note for extra soul. On Guitar, the notes are C, D, Eb, E, G, A. It blends the happy character of major keys with the expressive, vocal-like slides of the blues, and is a staple in country, swing, and jazz-blues contexts. Commonly used in Blues, Country, Jazz, Swing, Southern Rock. Notable players include B.B. King, Stevie Ray Vaughan, Albert King. Use over major and dominant 7th chords in blues, country, and swing contexts. Mix with minor blues for complete blues vocabulary.

Notes: C, D, Eb, E, G, A

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

Degrees: 1 2 b3 4 5 6

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

Number of notes: 6

Tuning: Open A (E-A-E-A-C#-E)

About Open A Tuning

Open A tuning (E-A-E-A-C#-E) produces an A major chord when strummed open. It is structurally identical to Open G tuned up one whole step, delivering a brighter, more tense sound that works particularly well for slide guitar centered on the key of A.

Jimmy Page used Open A with a slide on Led Zeppelin's 'In My Time of Dying' from Physical Graffiti (1975). Rory Gallagher also employed Open A for his raw, energetic slide work. Many players achieve Open A by simply placing a capo at the 2nd fret in Open G tuning, which is why dedicated Open A usage is less commonly discussed. However, without a capo, Open A gives direct access to the open A string resonance and a different feel under the fingers due to the higher tension.

BluesSlide GuitarRockDelta Blues

Notable artists: Jimmy Page, Rory Gallagher, Delta blues players

Best for: Slide guitar in the key of A, blues playing, and situations where you need the brightness of Open G tuned up without a capo

Musical Character

SoulfulHappyExpressiveWarm

Adds a 'blue note' (b3) to the major pentatonic, creating a brief clash between major and minor that gives the blues its characteristic sweet-and-sour emotional pull.

Chord Progressions Using This Scale

I – ♭VII – IV (Classic Rock Loop)Pop / Rock — Energy & Drive
♭VII – IV – I (Gospel Walk-Up)Blues — Spiritual & Uplifting

Explore This Scale in Other Tunings

← All Guitar scales in Open A tuning