Do Re MiC D E

Locomotion

Coltrane John4/4up-tempo-swing

Chord Diagrams — Locomotion in A (Guitar)

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Locomotion 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 D (ascending perfect fourth), D to B (descending minor third), B to E (ascending perfect fourth), E to G (ascending minor third), G to F# (descending half step), F# to F (descending half step), F to A (ascending major third), A to G (descending whole step), G to F (descending whole step), F to C# (descending major third), C# to B (descending whole step), B to A# (descending half step). A half-step bass movement creates a strong leading-tone pull that demands resolution. The mix of stepwise and leap motion balances smoothness with harmonic drive. When the progression loops, the bass returns from A# to A by half step.

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.

up-tempo-swing4/4 · 56 bars · Form: ABA

Chords: A7, D7, Bm7, E7, G7, F♯7, F7, A7♭5, G7♭5, F7♭5, C♯7♭5, B7♭5, A♯7/F.

Scales for Improvisation A bebop, A bebop major.

Diatonic chords: See all chords in the key of A