Setembro

Setembro in G

Key of G

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

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.