SOFT HEAP was a Canterbury supergroup consisting of HUGH HOPPER, ELTON DEAN, ALAN GOWEN, and PIP PYLE. By the time of their formation, KARL JENKINS had basically taken over THE SOFT MACHINE and ROBERT WYATT was long gone, although he still produced a wealth of solo work and headed up MATCHING MOLE. SOFT HEAP is basically a continuation of what THE SOFT MACHINE did around the time of "Fourth."
SOFT HEAP only released one studio album in the late Seventies. The best way to describe it is to make references to the mid period SOFTS releases, namely the avant jazz albums ("Fourth" and "Fifth" respectively). Another album of live material was released in the mid-Nineties, which also featured the likes of John Greaves and Mark Hewins. Both albums are of high interest for Canterbury afficiandos.