In a Sentimental Mood

In a Sentimental Mood 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 A (ascending unison), A to F (descending major third), F to D (descending minor third), D to E (ascending whole step), E to D (descending whole step), D to A (descending perfect fourth), A to E (descending perfect fourth), E to G (ascending minor third), G to B (ascending major third), B to C (ascending half step), C to D# (ascending minor third), D# to A# (descending perfect fourth), A# to F (descending perfect fourth), F to G# (ascending minor third), G# to C# (ascending perfect fourth), C# to D# (ascending whole step), D# to B (descending major third), B to G# (descending minor third), G# to A# (ascending whole step), A# to C (ascending whole step), C to G (descending perfect fourth), G to G (ascending unison), G to C (ascending perfect fourth), C to A (descending minor third), A to B (ascending whole step), B to F (ascending tritone), F to F# (ascending 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 F# 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.