well modern jazz is real jazz was done before about 1970, that surprises many people but listen to new jazz or smooth jazz
That is very cynical "chronology" and stereotype that will never find it’s ground about jazz or "real jazz" meaning. Yes mainstream was moving towards popularized jazz and towards more and more simplified versions, but that didn’t mean that at the very later times the number of released "real jazz" titles were a lot larger than you might know. In addition to that a HUGE variety of different new jazz directions had been evolving LARGE outside of the mainstream. I’ve been a member of BMG and Columbia House WAAAAY before even entering USA and was ordering records through my uncle. As you may know they would add freebies for you as well if you order certain quantities and the shipping was extremely low or even free in certain cases. Reading articles, researching and thereafter continuing membership I was finding more and more jazz releases that are SUBSTANTIALLY more interesting than Gerry Mulligan or even Stan Getz and every decade those titles increased.
After all it's not by far about jazz. It is about music and for me there are interesting artifacts and scores in every genre you can ever imagine
All Music Mattress.
Sorry for using different word for the meaning that can be flagged for the removal here