Jazz
Jazz is defined by improvisation built on top of structured harmonic frameworks — musicians making real-time decisions within a chord progression everyone in the room understands, ranging from tightly arranged big-band swing to the loosest free improvisation.
Foundational
Before Jazz had a name, it had a neighborhood — the streets, dance halls, and brothels of New Orleans at the turn of the twentieth century, where ragtime syncopation met blues phrasing and something entirely new walked out the door. It is loose, joyful, and absolutely unlike anything that existed before it. Era independence applies here too — the bands still playing this same New Orleans ensemble style at Preservation Hall today classify as Foundational just as surely as Armstrong and Morton did a century ago, because the structural mode is what defines this genre, not the calendar.
Louis Armstrong · Jelly Roll Morton · King Oliver
Swing
Jazz grew up, put on a suit, and learned to make an entire room move at once. Swing took collective improvisation and organized it into big bands and sectional arrangements with a pulse so irresistible that it turned Jazz into the popular music of its era — the music of the 1930s and 1940s dance hall, engineered for physical pleasure and communal joy.
Duke Ellington · Benny Goodman · Count Basie
Bebop
The moment Jazz stopped being dance music and became art music. Bebop was a deliberate act of complexity — faster tempos, denser chord changes, virtuosic improvisation that demanded total attention. Charlie Parker could play more meaningful notes in four bars than most musicians play in a career. Bebop is where Jazz became the most technically demanding improvisational music ever developed.
Charlie Parker · Dizzy Gillespie · John Coltrane
Cool
The answer to Bebop's intensity was restraint. Cool Jazz turned the temperature down — spacious phrasing, relaxed tempos, tonal subtlety. Miles Davis's Kind of Blue is the most purchased Jazz album in history, which suggests that what most people are looking for when they say they like Jazz is exactly this — music that is sophisticated without being aggressive.
Miles Davis · Dave Brubeck · Chet Baker
Modal
Miles Davis changed Jazz twice. The second time was Modal Jazz — abandoning rapid chord changes in favor of scales and modes that gave the improviser wide open space. Instead of navigating a highway of chord changes, the soloist now stood in a field and decided which direction to walk. The result was simultaneously more open and more hypnotic than anything Jazz had produced before.
Miles Davis · Bill Evans · Wayne Shorter
Fusion
Jazz picked up an electric guitar and never looked back. Fusion brought Rock and Funk energy into the Jazz improvisational framework. The sonic landscape is electric and sometimes closer to a Hendrix concert than a Jazz club. Bitches Brew remains one of the most radical and essential records ever made.
Miles Davis · Herbie Hancock · Weather Report
Vocal Standards
The American Songbook delivered through the Jazz harmonic and phrasing tradition, where the melody is a starting point and the singer's interpretation is the destination. This is Jazz that most people feel comfortable with before they feel comfortable calling themselves Jazz listeners.
Frank Sinatra · Ella Fitzgerald · Tony Bennett
Vocal Modern
The voice as a Jazz instrument — not a delivery mechanism for a song, but an improvising participant in a Jazz composition. The difference between Ella Fitzgerald and Esperanza Spalding is the difference between a great singer interpreting Jazz songs and a Jazz musician who happens to use her voice as her instrument.
Esperanza Spalding · Diana Krall · Cassandra Wilson