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For All We Know in G#
Key of G#
G# major (or Ab) lives at fret 4 on the low E string. All chords require barre technique, making it less common in guitar-centric songwriting but standard in piano-driven pop. Guitarists often use a capo to access friendlier shapes. G# is a intermediate-advanced-level key on guitar because the open G string is a half step below the root, creating dissonance — avoid letting it ring. Expect to rely on barre chords throughout, which builds hand strength and unlocks the entire fretboard.
Voice Leading
The bass line moves through G# to A# (ascending whole step), A# to D# (ascending perfect fourth), D# to A# (descending perfect fourth), A# to G# (descending whole step), G# to F (descending minor third), F to C (descending perfect fourth), C to A# (descending whole step), A# to G# (descending whole step), G# to B (ascending minor third), B to F (ascending tritone), F to A# (ascending perfect fourth), A# to G# (descending whole step), G# to G (descending half step), G to D (descending perfect fourth), D to F# (ascending major third), F# to C (ascending tritone), C to F (ascending perfect fourth), F to F (ascending unison), F to Cb (descending perfect fourth), Cb to D# (ascending minor third). A half-step bass movement creates a strong leading-tone pull that demands resolution. 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 D# to G# by perfect fourth.
Scales for Improvisation
G# 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, G# Mixolydian adds the flat seventh for an authentic blues-rock edge.