Round Midnight in A

Round Midnight 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 A (ascending unison), A to F# (descending minor third), F# to D (descending major third), D to G (ascending perfect fourth), G to D (descending perfect fourth), D to F (ascending minor third), F to A# (ascending perfect fourth), A# to E (ascending tritone), E to A (ascending perfect fourth), A to C (ascending minor third), C to C# (ascending half step), C# to D (ascending half step), D to F (ascending minor third), F to E (descending half step), E to B (descending perfect fourth), B to B (ascending unison), B to B (ascending unison), B to A (descending whole step), A to B (ascending whole step), B to D (ascending minor third), D to E (ascending whole step), E to E (ascending unison), E to C (descending major third), C to F (ascending perfect fourth). 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 F to A by major 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.