This seminal essay is both a corner-piece of "The Black Arts" Movement, and also one of the most important statements of "Poetics" (and the relationship of thought/feeling ['hunting'] to art [those heads on the wall] of the past 50 years. Originally published in HOME (1966), while still under the name Le Roi Jones, his essay for some reason did not appear in The LeRoi Jones/Amiri Baraka reader. Baraka makes similar points in many of his longer works as well, but the succinctness of this essay in theorizing a new American vernacular which is as oral as it is written (in contrast to its Euro-forebears)
is immensely useful in the classroom, or even for any young rock and roll musician who is sick of being told rock music pales in comparison to page-based poetry.
The essay is not available on line (to force you to go the library), but discussions of it are.