Epistrophy in A#

Epistrophy in A#

Monk's co-composed quirky anthem cycles through Mixolydian dominants and Lydian Dominant bridge tension rooted in A#. The signature chromatic whole-tone flavor makes Epistrophy instantly recognizable and technically demanding for improvisers. Drilling the B7 – C7 – C#7 – D7 – Em – A7 changes builds fluency with tritone-related dominant motion and Monk's distinctive rhythmic displacement.

Epistrophy in A#

A# (Bb) major requires barre chords rooted at fret 1 on the A string or fret 6 on the E string. Despite the barre demands, it is a common key in funk, New Orleans R&B, and brass band music. The open D string can ring as the major third for added color. A# is a intermediate-level key on guitar because the open D string is the major 3rd of Bb, adding a bright color if allowed to ring. Expect to rely on barre chords throughout, which builds hand strength and unlocks the entire fretboard.

Voice Leading

The bass line moves through B to C (ascending half step), C to C# (ascending half step), C# to D (ascending half step), D to E (ascending whole step), E to A (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 A to B by whole step.

Scales for Improvisation

A# 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, A# Mixolydian adds the flat seventh for an authentic blues-rock edge.