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Scarborough Fair in A#
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# (ascending unison), A# to C# (ascending minor third), C# to C# (ascending unison), C# to A# (descending minor third), A# to G# (descending whole step), G# to C# (ascending perfect fourth), C# to A# (descending minor third), A# to D# (ascending perfect fourth), D# to A# (descending perfect fourth), A# to G# (descending whole step). 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 A# by whole step.
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. Use the Lydian mode (raised 4th) over the IV chord for a dreamy, floating quality that lifts the harmony.