A legendary musician, composer, bandleader and activist has passed today. More to say later; meanwhile, head over to WCKR-FM, where an extensive tribute will begin at noon EST. Hank Shteamer has posted an appreciation on the TONY Blog, with links to relevant articles and videos.

Update 1:51pm: The New York Times has just posted a superb obituary by Peter Keepnews — son of fabled producer Orrin, in case you’re curious.