Harlem Nocturne in G#

Earle Hagen / Dick Rogers(1939)swing
Do Re MiC D E
A
B
C

Chord Diagrams — Harlem Nocturne in G# (Guitar)

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FingerNoteDegree

Harlem Nocturne 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 G# (ascending unison), G# to C# (ascending perfect fourth), C# to C# (ascending unison), C# to C# (ascending unison), C# to E (ascending minor third), E to A# (ascending tritone), A# to D# (ascending perfect fourth), D# to G# (ascending perfect fourth), G# to F# (descending whole step), F# to B (ascending perfect fourth), B to F# (descending perfect fourth), F# to E (descending whole step), E to B (descending perfect fourth), B to E (ascending perfect fourth), E to D (descending whole step), D to C (descending whole step), C to A# (descending whole step), A# to G# (descending whole step), G# to C# (ascending perfect fourth), C# to F# (ascending perfect fourth). 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 F# to G# by whole step.

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.

swing4/4 · 29 bars · Form: ABC

Chords: G♯mMaj7, G♯m7, C♯m, C♯m7, C♯mMaj7, E6, A♯7, D♯7, G♯m6, F♯7, B7, F♯m7, E7, Bm7, E9, D9, C9, A♯9, G♯9, C♯9, F♯9.

Scales for Improvisation G# bebop minor, G# bebop.

Diatonic chords: See all chords in the key of G#