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Ruby, My Dear in F
Key of F
F major is the gateway to barre chords. While F itself requires a full barre at fret 1, the remaining diatonic chords (C, Dm, Am, G, Bb) mix open and barre shapes. The open high E acts as Fmaj7's seventh, adding unexpected richness. F is a intermediate-level key on guitar because the open high E string is the major seventh of F, creating a lush Fmaj7 resonance even in basic shapes, but the F barre chord itself is the first big hurdle for beginners. This key mixes open and barre shapes, making it a good intermediate challenge that builds fretboard fluency.
Voice Leading
The bass line moves through G to C (ascending perfect fourth), C to F (ascending perfect fourth), F to G (ascending whole step), G to G# (ascending half step), G# to A (ascending half step), A to A# (ascending half step), A# to B (ascending half step), B to D (ascending minor third), D to G (ascending perfect fourth), G to A# (ascending minor third), A# to B (ascending half step), B to C (ascending half step), C to F (ascending perfect fourth), F to A# (ascending perfect fourth), A# to C# (ascending minor third), C# to D (ascending half step), D to F# (ascending major third), F# to C (ascending tritone), C to C (ascending unison), C to C# (ascending half step), C# to B (descending whole step), B to F# (descending perfect fourth), F# to B (ascending perfect fourth), B to C (ascending half step), C to C# (ascending half step), C# to D (ascending half step), D to E (ascending whole step), E to F (ascending half step), F to A# (ascending perfect fourth), A# to F (descending perfect fourth), F to G# (ascending minor third), G# to C# (ascending perfect fourth), C# to B (descending whole step), B to D# (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 D# to G by major third.
Scales for Improvisation
F 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, F Mixolydian adds the flat seventh for an authentic blues-rock edge.