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Summer Of '69 in B
Key of B
B major mixes barre and open elements. The B chord itself is a barre at fret 2, but E and A are comfortable open chords forming the IV and V. The open B string rings as the root, allowing creative drone-based arrangements. B is a intermediate-level key on guitar because the open B string rings as the root and the open E strings provide the 4th — useful for sus4 voicings and drone effects. This key mixes open and barre shapes, making it a good intermediate challenge that builds fretboard fluency.
Voice Leading
The bass line moves through B to B (ascending unison), B to F# (descending perfect fourth), F# to F# (ascending unison), F# to G# (ascending whole step), G# to F# (descending whole step), F# to B (ascending perfect fourth), B to E (ascending perfect fourth), E to B (descending perfect fourth), B to F# (descending perfect fourth), F# to D (descending major third), D to G (ascending perfect fourth), G to A (ascending whole step), A to G (descending whole step). 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 B by major third.
Scales for Improvisation
B 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. Layer in the full major scale for melodic runs, reserving the pentatonic for riff-based phrases.