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Meditation in A#
Jobim's contemplative bossa nova moves gently through Bebop Major and Dorian color over a softly swinging A# pulse. The spacious melodic lines invite long, lyrical improvisation with careful attention to rhythmic nuance and harmonic sensitivity. The A#6 – A7sus4 – A7 – Dm7 – G7b13 – Cm7 – D#m6 – F7#5 – D#maj7 – C#dim7 – F7 changes reward the player who understands how silence and space define bossa nova phrasing.
Key of A#
A# (Bb) major requires barre chords rooted at fret 1 on the A string or fret 6 on the E string. Despite the barre demands, it is a common key in funk, New Orleans R&B, and brass band music. The open D string can ring as the major third for added color. A# is a intermediate-level key on guitar because the open D string is the major 3rd of Bb, adding a bright color if allowed to ring. Expect to rely on barre chords throughout, which builds hand strength and unlocks the entire fretboard.
Voice Leading
The bass line moves through A# to A (descending half step), A to A (ascending unison), A to D (ascending perfect fourth), D to G (ascending perfect fourth), G to C (ascending perfect fourth), C to D# (ascending minor third), D# to F (ascending whole step), F to D# (descending whole step), D# to C# (descending whole step), C# to F (ascending major third). 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 F 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.