Friday The 13th (G minor) - Jazz Analysis & Chords

Harmonic Highlights

• The progression Gmaj7–F7–Eb7–D7 functions as a continuous descending loop, utilizing a bVII7 to bVI7 parallel motion that leads chromatically to the V7 (D7).
• The inclusion of Gmaj7 as the tonic creates a stark harmonic tension against the nominal G minor key center, embodying Monk’s signature use of major/minor ambiguity.
• The structure is entirely cyclical with no bridge or B-section, shifting the focus from functional resolution to repetitive, hypnotic tension and release.

Improvisation Focus Motivic development and rhythmic displacement.

Difficulty Rating 2/5: While the four-bar loop is harmonically repetitive and predictable, the challenge lies in sustaining melodic interest without the aid of structural changes.