Modal Jazz: How Miles Davis Freed Music from Chord Changes

An Album Recorded in Two Sessions, Still the Best-Selling Jazz Record of All Time

Recorded over two sessions in March and April of 1959, Miles Davis's Kind of Blue has sold more than five million copies in the United States alone, making it the best-selling jazz album in history. At the time of its release, it represented a fundamental rethinking of how jazz improvisation worked — not a gradual evolution, but a deliberate break from the bebop tradition that had dominated jazz for the previous 15 years. The album's success introduced modal jazz to a mass audience, though the approach had been germinating in Davis's thinking for several years before the sessions.

Modal jazz is defined by its substitution of extended scalar regions — modes — for the rapid, harmonically complex chord changes that characterized bebop. Where a bebop soloist might navigate 30 or 40 chord changes in a 32-bar tune, a modal jazz soloist might have only one or two chords per chorus, sometimes held for minutes at a time. The change sounds subtle in description but was profound in practice: it shifted the improviser's focus from chord-by-chord harmonic navigation to melodic invention within a broader tonal space.

From Bebop to Modal: The Historical Transition

Bebop, developed in the 1940s primarily by Charlie Parker and Dizzy Gillespie, prized harmonic density and speed. Tunes like "Cherokee" and "Donna Lee" were vehicles for demonstrating virtuosity over rapidly moving changes. By the mid-1950s, some musicians were beginning to find this approach limiting — particularly for melodic lyricism.

Davis himself described the transition in his autobiography (Miles: The Autobiography, 1989): "I was tired of the chord changes... I wanted to be able to play something you could play for days without ever running out of ideas." His collaboration with arranger Gil Evans had already explored impressionist, open-textured orchestration on Miles Ahead (1957) and Porgy and Bess (1958). But the modal approach needed a smaller group context to develop as an improvisational language.

The theoretical groundwork was being laid simultaneously by George Russell, a composer and theorist who published The Lydian Chromatic Concept of Tonal Organization in 1953. Russell argued that tonal music was fundamentally modal — rooted in scales rather than chords — and that the Lydian mode (a major scale with a raised fourth) was the most consonant tonal environment for jazz improvisation. Davis was aware of Russell's work and cited its influence on his thinking.

The Modes and How They Function in Jazz

Western music uses seven modes derived from the major scale, each beginning on a different scale degree. Each mode has a distinct interval pattern and emotional character.

On Kind of Blue, "So What" uses the Dorian mode almost exclusively — D Dorian for the first 16 bars, E-flat Dorian for eight bars, and back to D Dorian. The entire solo section sits on essentially two chords, allowing soloists to explore melodic ideas rather than navigate harmonic changes at breakneck speed.

The Musicians and Their Contributions

The Kind of Blue sessions assembled an extraordinary group. Each brought a distinctive voice to the modal context.

• Miles Davis (trumpet): Played with characteristic economy and space; his phrasing on "Blue in Green" remains a masterclass in understatement
• John Coltrane (tenor saxophone): At this point developing the dense harmonic approach he called "sheets of sound"; modal jazz both constrained and liberated him — it pushed him toward A Love Supreme (1964) and ultimately free jazz
• Bill Evans (piano): Co-credited with the concept of "All Blues" and wrote the album's liner notes — an unusually eloquent explanation of the modal approach; Evans's voicings used quartal harmony (chords built in fourths) that became central to modern jazz piano
• Cannonball Adderley (alto saxophone): Brought a soulful, blues-inflected voice that balanced Coltrane's intensity
• Paul Chambers (bass) and Jimmy Cobb (drums): Provided the elastic rhythmic foundation that modal improvisation required

Legacy and Influence

The impact was immediate and permanent.

Coltrane's own modal explorations culminated in My Favorite Things (1961) — where he applied the modal approach to a standard waltz — and A Love Supreme. His "Giant Steps" (1960) moved in the opposite direction, toward maximum harmonic density, but even that was a direct response to and departure from the modal language.

• McCoy Tyner's quartal piano voicings, developed with Coltrane's quartet, became the dominant sound of post-bop jazz piano
• Herbie Hancock, who joined the Davis quintet in 1963, synthesized modal, post-bop, and later funk and electronic music approaches
• The modal approach spread into rock and other genres: The Beatles used Mixolydian and Dorian modes consciously; Santana's guitar style is fundamentally modal; Radiohead and other post-rock groups cite modal jazz harmony as an influence
• In music education, modal jazz theory became foundational — the Berklee College of Music and most jazz programs worldwide teach modal improvisation as a core component of the curriculum