Do Re MiC D E

Abre Alas

Lins Ivan4/4bossa-nova

Chord Diagrams — Abre Alas in B (Guitar)

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Abre Alas in B

Key of 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 A (descending whole step), A to B (ascending whole step), B to E (ascending perfect fourth), E to E (ascending unison), E to F# (ascending whole step), F# to D (descending major third), D to E (ascending whole step), E to A (ascending perfect fourth), A to F# (descending minor third), F# to A (ascending minor third), A to A (ascending unison), A to A (ascending unison), A to C# (ascending major third). The predominantly stepwise bass motion creates smooth, connected voice leading. When the progression loops, the bass returns from C# to B by whole step.

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.

bossa-nova4/4 · 80 bars · Form: AB

Chords: Bm7, Amaj7, Bm9, E7, E7/B♭, F♯m7, Dadd9, E/G, Amaj7/F♯, F♯m9, Amaj7♯5, A6, A7, C♯7.

Scales for Improvisation B bebop minor, B bebop.

Diatonic chords: See all chords in the key of B