It paralleled the South's delayed modernization:
Decline of Church
Integration
Welfare and 'Open Borders'.
As for contemporary Jazz - and music in general - there's always a lineage of mentors, directly or indirectly, with recording technology and record distribution making building on that past increasingly easier. There's tons of quality, – we're just in the position of having to sift and filter through this fin-de-siecle redux of Weimerica. Build your hierarchies of quality.
This. Its development in the creole orchestra's of former French colonies produced a 'pop-ular' form of it, distinguished by its utility as Dance Music (as opposed to a passive symphonic presentation) first in Big Bands/Swing, and only later returning to its orchestral compositional roots with the shift to smaller ensembles and higher quality vinyl/distribution, before recombining them. Its primary contribution to European music was widening rhythmic horizons in experimental composition of the time, and reinforcing the trend in exploring dissonance/microtones.
Jazz in general reaches to approximate human speech. If conversation isn't 'story' enough, you may be autistic.
Jazz's inception was metaphysically Creole (this is taken too literally oftentimes.) Blacks, whites, and half-castes would be found in these early Acadian orchestras. The cult of musical celebrity is very recent, – it's been a historically low prestige (as with Actors) trade for most of its Western history.
This would infect the type of rock hipsters now parrot in the vaguely late 60's through 70s druggie rock ("The Less I Know The Better" Tame Impala music video is its apotheosis; if you haven't seen it, you have yet to reach cucking disgust levels that weren't even thought possible.) Even in the math/noise genres, there is structure adhered to, or producing a facsimile thereof that's uncannily poking out of the chaos like a Rorschach test.
KULTUR TERROR
This genre balkanization mirrors the disintegration of the American Black and his Family/Culture; the spectrum Jazz lay the foundations for contained and projected all these things itself. Very little Acid Jazz or Funk achieves on the level of a Mingus or Monk (the comparison is unfair perhaps; to shift the goalposts – or even parallels a Beach Boys - Pet Sounds as a Pop genre offshoot. )
This cannot be said where vocals are present. The social utility to the American Black of Jazz came through Church, and Dances organized thereby (arriving only well later in secular Dance Hall contexts.) That 'response' referred to IS religious, properly speaking – and conceptually originates in the Black American Gospel Choir's conventions (the more demonstrably emotive Southern Protestant sects Blacks subscribed to certainly influenced this development greatly.)
Take Five and find the word you meant to occupy the space of "diction", degenerate, illiterate, spiritual negroid
This
God's gift to musical academia folks, – those that can't do, ( ( ( C R I T I Q U E ) ) )