Evidence in B

Thelonious Monk(1948)swingMedium

Evidence in B

Monk's angular bebop composition — built on the "Just You, Just Me" changes — deploys Bebop Major, Mixolydian, and Dorian language through a distinctly personal B lens. The rhythmic displacement and melodic chromaticism challenge conventional bebop phrasing patterns. The BMaj7 – G#m7 – C#m7 – F#7 – E7 – A7 – D7 changes sharpen a soloist's sense of metric flexibility and harmonic surprise.

Evidence in 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 G# (descending minor third), G# to C# (ascending perfect fourth), C# to F# (ascending perfect fourth), F# to E (descending whole step), E to A (ascending perfect fourth), A to D (ascending perfect fourth). 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 B by minor 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. Over dominant seventh chords, B Mixolydian adds the flat seventh for an authentic blues-rock edge.

swing4/4 · 32 bars · Form: AABA

Chords: BMaj7, G♯m7, C♯m7, F♯7, E7, A7, D7.

Scales for Improvisation B major, B mixolydian, B dorian, B bebop major, B major pentatonic.

Diatonic chords: See all chords in the key of B