I've been wondering about getting it and also hesitating, though I don't have the LPs any more. I don't like
Composition 82 for four orchestras at all, it's atrociously played and IMO not much of a composition either compared with many things he's done since then. Nor am I that keen on the Braxton/Abrams duo record or
Composition 95 for two pianos. If the CDs came out separately I'd get hold of
Five Pieces 1975, New York Fall 1974, Creative Orchestra Music 1976, For Trio and
Montreux/Berlin immediately.
That link of yours should have been to
here, surely?