Jazz — a study guide for songwriters
Jazz looks like a wall of chord symbols and sounds like a private language. It isn't. Under the surface, almost everything runs on one engine — the ii–V–I — applied to a handful of song forms that were pop music's own templates for forty years. This section decodes the engine, the forms, the soloing language, the transitions, and gives you a study path that doesn't require a conservatory.
Open the chord builder and follow along →Start anywhere
The forms
The 32-bar AABA, rhythm changes, the jazz blues, ABAC and modal forms — the five shapes behind most standards.
02Harmony essentials
ii–V–I major and minor, turnarounds, tritone substitution, passing diminished and shell voicings for guitar.
03Soloing & vocabulary
Chord tones first, guide-tone lines, enclosures, motif development — the actual mechanics of melodic improvisation.
04Intros, turnarounds & endings
How tunes start, breathe and stop: vamp intros, the Basie ending, tags, and moving between keys without a bump.
05The players
The guitar lineage from Charlie Christian to Metheny — plus the horn players every guitarist actually learned from.
06How to study it
Ten standards, one transcription method, and a practice loop that compounds — without drowning in theory.
Why songwriters should care
Three reasons, none of them "to sound jazzy". First, voice leading: jazz harmony is a course in making chords melt into each other — the skill behind every sophisticated pop progression from Stevie Wonder to Radiohead. Second, reharmonisation: once you can substitute chords, any tired three-chord chorus can be re-lit without changing the melody. Third, form literacy: AABA — the 32-bar standard form — is still everywhere (Lennon and McCartney wrote in it constantly), and knowing why the bridge exists makes your bridges better.
If the blues section is the load-bearing wall, this is the plumbing and wiring. Start with forms if you think in songs, or harmony if you think in chords.