How Insensitive in A

How Insensitive in A

Jobim's haunting bossa nova featuring a chromatically descending bass line over sustained minor tonality, one of the quintessential Brazilian jazz ballads.

How Insensitive in 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 C to B (descending half step), B to A# (descending half step), A# to A# (ascending unison), A# to F (descending perfect fourth), F to G# (ascending minor third), G# to D (ascending tritone), D to G (ascending perfect fourth), G to C (ascending perfect fourth), C to A (descending minor third), A to G# (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 G# to C 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.