BTW, the album art has one of the funniest stylistic fails ever.
Nucleus - Elastic Rock: Jazz fusion. By jazz standards, they seriously rock out and aren't afraid to have the drummer bashing the cymbals.
Farm - s/t: Blues rock, kinda rednecky. They sound OK but no great shakes.
Miles Davis - Miles in the Sky and In A Silent Way: These sound like a very gradual transition to Bitches Brew. Need another listen or two.