fortunately happened on a decently priced used vinyl copy of this and purchased it. i really only bought it for herbie hancocks and john maclaughlin's involvement.

crucial stuff.

np: miles davis- spanish key

check out the cellar door box set for all the shows that that stuff was taken from. Also check out Dark Magus for stuff in a similar vein, as well as Agharta and Pangea for that kind of stuff pushed to the limit.