Not to put too fine a point on things, but to me the title of this thread seems somewhat of an oxymoron ..
seriously , most of the good players I know rely on the better paying GB gigs ( pit shows, jingles, industrial uses , etc ) to support their jazz playing habits .Jazz gigs are notoriously low paying nationally at the local /regional level .. the tend to separate "their" music ( GB gigs ) from "my " music ( jazz gigs for fun ) to put food on the table and to keep the baby in shoes
now. if the lousy union would just come up with an affordable health plan for musicians