Popular fretboard positions with fingering suggestions
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A/C♯ is the A major / C♯ (1st inversion) guitar chord with C♯ in the bass. It uses the notes A, C♯, and E and the interval formula 1-3-5.
The A major major chord, built from the root (A major), major third C♯, and perfect fifth E, delivers a bright, harmonious sound that feels resolved and complete. Its balanced structure makes it the foundation of Western harmony, widely used across all genres to convey joy, strength, and stability. With C♯ in the bass, this voicing functions as the 1st inversion of A major.
Also written as A, Amaj/C♯, and AM/C♯.
These are quick-start shapes for players who want the answer first and the deeper theory second.
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Each note below shows how the chord is built from its root. This is the theory layer underneath the fretboard shapes.
The root anchors the chord and defines its tonal center.
This note defines the chord's major quality and brings brightness to the sound.
The fifth reinforces stability and gives the chord its strong harmonic frame.
Every shape is shown with its diagram and exact fingering instructions.
A/C♯ uses the notes A, C♯, and E. Its interval formula is 1-3-5.
A/C♯ is also written as A, Amaj/C♯, and AM/C♯.
Place the 1st finger on the 2nd fret of the 2nd string, 3rd string, and 4th string in barre position. Place the 3rd finger on the 4th fret of the 5th string. Let the first string ring open. Strum from the 5th string down.
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