St.Thomas in B

Sonny Rollins(1956)latin
Do Re MiC D E
A

Chord Diagrams — St.Thomas in B (Guitar)

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

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.

latin4/4 · 16 bars · Form: A

Chords: E7, B, G♯7, D♯m7, F♯7, C♯m7, A7, D♯m7♭5, G7, B7/D♯, Fdim7, E, B/F♯.

Scales for Improvisation B bebop, B bebop major.

Diatonic chords: See all chords in the key of B