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Afro Blue in B
Afro Blue in B: Mongo Santamaria's Afro-Cuban jazz classic. Dorian and Harmonic Minor scales define the exotic, modal color of these sophisticated changes. Chords: Bm69 – G7b9/Ab – F#7b9/G – A – G – Bm – C13 – Bm7.
Afro Blue in B
B major mixes barre and open elements. The B chord itself is a barre at fret 2, but E and A are comfortable open chords forming the IV and V. The open B string rings as the root, allowing creative drone-based arrangements. B is a intermediate-level key on guitar because the open B string rings as the root and the open E strings provide the 4th — useful for sus4 voicings and drone effects. This key mixes open and barre shapes, making it a good intermediate challenge that builds fretboard fluency.
Voice Leading
The bass line moves through B to G (descending major third), G to F# (descending half step), F# to A (ascending minor third), A to G (descending whole step), G to B (ascending major third), B to C (ascending half step), C to B (descending half step). 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 B to B by unison.
Scales for Improvisation
B 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, B Mixolydian adds the flat seventh for an authentic blues-rock edge.