What key is I'll Be Seeing You in?

G major is the singer-songwriter's key. The open G, B, and D strings spell out the full G major triad with zero fretting. Add the open high E for a Gadd6 shimmer. Nearly every diatonic chord (Em, Am, C, D) has a comfortable open voicing. G is a beginner-level key on guitar because the open G, B, and D strings form a complete G major triad without fretting a single note, and the open low E adds a rich 6th color. Beginners will find this key approachable since most chords use open voicings with minimal stretching.

Voice Leading

The bass line moves through G to B (ascending major third), B to A (descending whole step), A to E (descending perfect fourth), E to D (descending whole step), D to A (descending perfect fourth), A to A# (ascending half step), A# to E (ascending tritone), E to D (descending whole step), D to G (ascending perfect fourth), G to D (descending perfect fourth), D to F# (ascending major third), F# to A (ascending minor third), A to C (ascending minor third), C to G# (descending major 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 G# to G by half 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.

swing2/2 · 33 bars · Form: ABA'C

Chords: Sol, Si7, Lam, Mi7, Re7, Lam7, La♯dim7, Mim7, Re7♯5, Sol6, Re9♯5, Fa♯m7♭5, La9, Dom6, Sol♯m7.

Scales for Improvisation Sol bebop, Sol bebop major.