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Don't You Worry 'Bout A Thing 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 B (ascending unison), B to B (ascending unison), B to E (ascending perfect fourth), E to A (ascending perfect fourth), A to D (ascending perfect fourth), D to G (ascending perfect fourth), G to C (ascending perfect fourth), C to G (descending perfect fourth), G to D (descending perfect fourth), D to D (ascending unison), D to F# (ascending major third), F# to E (descending whole step), E to A (ascending perfect fourth), A to D (ascending perfect fourth), D to F# (ascending major third), F# to C (ascending tritone), C to E (ascending major third), E to D (descending whole step), D to C# (descending half step), C# to C# (ascending unison), C# to C (descending half step), C to C (ascending unison), C to B (descending half step), B to B (ascending unison), B to A# (descending half step), A# to A# (ascending unison), A# to A (descending half step), A to A (ascending unison), A to D (ascending perfect fourth), D to C (descending whole step), C to G (descending perfect fourth), G to C (ascending perfect fourth). A half-step bass movement creates a strong leading-tone pull that demands resolution. The predominantly stepwise bass motion creates smooth, connected voice leading. When the progression loops, the bass returns from C to B by half step.
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. Over dominant seventh chords, B Mixolydian adds the flat seventh for an authentic blues-rock edge.