Four in A

Miles Davis()swing
Do Re MiC D E
A

Chord Diagrams — Four in A (Guitar)

Display
FingerNoteDegree

Four in A

Key of A

A major is a rock and blues cornerstone. The open A string delivers a strong root, while both E strings ring as the fifth. Classic A-D-E progressions practically play themselves with open cowboy chords. The open high E is the fifth, reinforcing power. A is a beginner-level key on guitar because the open A string is the root and the open E strings provide the fifth above and below, creating a massive low-end anchor. Beginners will find this key approachable since most chords use open voicings with minimal stretching.

Voice Leading

The bass line moves through A to A (ascending unison), A to B (ascending whole step), B to D (ascending minor third), D to C# (descending half step), C# to C (descending half step), C to E (ascending major third). A half-step bass movement creates a strong leading-tone pull that demands resolution. The predominantly stepwise bass motion creates smooth, connected voice leading. When the progression loops, the bass returns from E to A by perfect fourth.

Scales for Improvisation

A major pentatonic works because every note is either a chord tone or a safe passing tone — there are no avoid notes. For soloing, this means you can play freely without clashing. Over dominant seventh chords, A Mixolydian adds the flat seventh for an authentic blues-rock edge.

swing4/4 · 33 bars · Form: A

Chords: AMaj7, Am7, Bm7, Dm7, C♯m7, Cm7, E7.

Scales for Improvisation A bebop, A bebop major.

Diatonic chords: See all chords in the key of A