I'm Just A Lucky So And So in A

Duke Ellington / Mack David(1945)swing

I'm Just A Lucky So And So 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 A (descending perfect fourth), A to B (ascending whole step), B to B (ascending unison), B to E (ascending perfect fourth), E to D (descending whole step), D to A# (descending major third), A# to A (descending half step), A to G# (descending half step), G# to C# (ascending perfect fourth), C# to F# (ascending perfect fourth), F# to C# (descending perfect fourth), C# to C (descending half step). A half-step bass movement creates a strong leading-tone pull that demands resolution. The root motion by larger intervals (fourths and fifths) gives each chord change a strong, decisive character. When the progression loops, the bass returns from C to A by minor third.

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 · 25 bars · Form: AB

Chords: A6, D7, A7, B7, Bm7, E7, D9, A♯dim, AMaj7, G♯m7♭5, C♯7, F♯m, C♯m7, Cm7.

Scales for Improvisation A bebop, A bebop major.

Diatonic chords: See all chords in the key of A