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Aquarela do Brasil in A
Aquarela do Brasil in A — Ary Barroso's samba classic. Explore Bebop Major and Major Pentatonic scales over these sophisticated changes. Chords: A6 – Am6 – F#7b9 – F#7#9 – Bm9 – E9 – AMaj7 – Bm7 – D#7b9 – D#(b5) – A7 – G#7 – G7 – F#7 – C#m7b5 – Bm – Bm(#5) – Bm6 – G9 – G#7#9/G# – C#m7 – F#Maj7 – B9 – AMaj9 – E7#9.
Aquarela do Brasil 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 A to A (ascending unison), A to F# (descending minor third), F# to F# (ascending unison), F# to B (ascending perfect fourth), B to E (ascending perfect fourth), E to A (ascending perfect fourth), A to B (ascending whole step), B to D# (ascending major third), D# to D# (ascending unison), D# to A (ascending tritone), A to G# (descending half step), G# to G (descending half step), G to F# (descending half step), F# to C# (descending perfect fourth), C# to B (descending whole step), B to B (ascending unison), B to B (ascending unison), B to G (descending major third), G to G# (ascending half step), G# to C# (ascending perfect fourth), C# to F# (ascending perfect fourth), F# to B (ascending perfect fourth), B to A (descending whole step), A to E (descending perfect fourth). A half-step bass movement creates a strong leading-tone pull that demands resolution. The mix of stepwise and leap motion balances smoothness with harmonic drive. When the progression loops, the bass returns from E to A by perfect fourth.
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.