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