I changed music five or six times what have you done? Miles Davis famously crowed at a White House dinner late in his life. Never a man known for his modesty, for once the Prince of Darkness was selling himself short.

By our count, there are at least eight occasions on which the worlds most recognisable (and bestselling) jazz musician has played a pivotal role in changing the course of music for evermore.

A major career-spanning documentary Miles Davis: Birth of the Cool is now on Netflix a film that charts the musical pioneers career and features previously unseen interviews with his friends, family, collaborators and admirers, including guitarist Carlos Santana. Its timely release isnt coincidental, either, and comes 50 years after Daviss most commercial period was about to begin. Lets take a walk through the history of post-war improvised music via the work of its most restless innovator.

In 1944, an 18-year-old Miles Davis left East St Louis to study music at New Yorks prestigious Juilliard School. His real education, however, was in the clubs of 52nd Street, then booming with the frenetic, virtuosic, breakneck-tempo bebop of the time. Within months, Davis was cutting his teeth as a member of troubled sax player Charlie Parkers band, but in truth, the trumpeters own improvisational flights were never as sharp or showy as those of his contemporaries.

His answer was to slow tempos, bring in extra harmonies and horns, extend jazz from a snapshot of a few minutes into sometimes 13-minute-long pieces and, alongside arranger Gil Evans, make a series of chilled, classically influenced nonet chamber recordings that would later be collected as the album Birth of the Cool and credited with kick-starting the cool jazz wave to come.

In 1955, Davis ascended from being a jazz star to a household name after signing with the mainstream might of Columbia Records. He put this new influence and budget to good use, reviving his partnership with Evans to write Miles Ahead (1957), the first of three seminal albums that pit his breathy, tender trumpet exertions over the luscious textures of a 19-piece orchestra. Followed by the Gershwin collection Porgy and Bess (1959) and flamenco-flavoured Sketches of Spain (1960), this trio collectively popularised the jazz-classical hybrid known as Third Stream.

Davis severed himself from 50 years of harmonic jazz convention with the 1958 composition Milestones and, most famously, the ever-enduring, first-take-only sextet session of 1959 Kind of Blue, which is widely celebrated as the bestselling jazz album ever.

Davis was a pioneer in improvisation, which freed players up to stretch out in a single tonality, in the same way trippy blues-rock musicians would play 10 years later. On the revelatory track Flamenco Sketches, soloists were presented a list of five modes to improvise in at leisure, the rhythm section following rather than dictating the harmony, shifting chord only when the soloist chose to move to a new tonality. Breathtaking.

Craving new ideas, in the mid-1960s, when he was in his mid-forties, Davis began assembling a new band of musicians half his age including future stars Herbie Hancock and Wayne Shorter who would collectively usher in a new democratic musical model known as post-bop, which would change jazz for ever. Often using Shorters oblique compositions for fuel, the Second Great Quintet broke down the conventional soloist and rhythm section approach with a telepathic time, no changes philosophy that allowed song structures to unfold in real-time. The highest form of spontaneous musical expression.

For all his earlier innovations in jazz, arguably none of Daviss skin-shedding stunts had a wider influence on pop culture than his early 1970s electric reinvention, heralded by the arrival of ... Brew the undefinable improvisatory assault of an album that celebrates its 50th anniversary on Monday, March 30.

About seven months earlier, Davis assembled more than a dozen musicians including two drummers, two bassists and three electric keyboardists at Columbias New York studios, and over only three days, directed deep, dark, shamanic jams that conjured something entirely new and utterly beguiling.

Intoxicating to rock fans and festivals, once-slick-suited Davis was reborn as a scarf-toting counterculture hero, while the records principle players would go on to pack arenas playing that much-maligned marriage of jazz and rock that came to be known as fusion.

James Brown invented funk in the mid-1960s. Sly Stone channelled Jimi Hendrix and helped birth funk-rock. Davis took note and wanted a piece of that lucrative, block-party-starting pie. The term jazz-funk would soon come to epitomise smooth, smoochy, noodly, blandness, and perhaps you can thank Daviss dense, groovy improvised On the Corner LP for that. It again featured Hancock, whose own subsequent 1970s recordings, beginning a year later with million-seller Head Hunters, would go on to define the genre more than anybodys.

Sounds crazy, right? But there are semi-legitimate arguments and compelling corners of the internet that argue that the relentless, polyrhythmic wig-out Rated X laid the tracks for the genre to emerge across the pond two decades later. Just listen to the way backbeats and downbeats are reversed (or what translates as a bass drum and a snare), creating a squelching percussive tumult with overriding melody in a way that biographer John Szwed calls the birth of ambient jazz. Its not even the weirdest moment on Get Up with It (1974), a two-hour opus of unnerving offcuts that contained Daviss final studio recordings before a six-year hiatus.

After a lost half-decade of hedonism and health problems, Davis re-emerged in 1981 with another sonic reinvention awkwardly reconciling a 1980s pop aesthetic with some pretty deep jamming. A period that remains divisive to this day, things reached a peak, of sorts, with Youre Under Arrest (1985), which included Daviss instrumental takes on Michael Jacksons Human Nature and Cyndi Laupers Time After Time which offered a sense of legitimacy to the smooth jazz that was to haunt US radio for decades to come.

Miles Davis: Birth of the Cool is on Netflix now

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Updated: March 25, 2020 06:55 PM

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'Birth of the Cool': 8 ways Miles Davis changed the music scene forever - The National