Ruby, My Dear in A
Ruby, My Dear 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 G to D (descending perfect fourth), D to C (descending whole step), C to A (descending minor third), A to E (descending perfect fourth), E to F# (ascending whole step), F# to F (descending half step), F to D (descending minor third), D to C (descending whole step), C to G (descending perfect fourth), G to D (descending perfect fourth), D to A (descending perfect fourth), A to F (descending major third), F to F# (ascending half step), F# to G (ascending half step), G to G# (ascending half step), G# to C# (ascending perfect fourth), C# to D# (ascending whole step), D# to F# (ascending minor third), F# to C# (descending perfect fourth), C# to G# (descending perfect fourth), G# to G# (ascending unison), G# to G (descending half step), G to A (ascending whole step), A to B (ascending whole step), B to C (ascending half step), C to C (ascending unison), C to F (ascending perfect fourth), F to F# (ascending half step), F# to G# (ascending whole step), G# to D# (descending perfect fourth), D# to G (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 G to G by unison.
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.