:::sigh::: So difficult to narrow down...
I'm going to exclude MOST various artists/compilations
and it becomes a Soundtrack DID (Desert Island Discs)
Thief - Tangerine Dream
Silent Running -Peter Schiekele AKA PDQ Bach
Blade Runner - Vangelis
Heavy Metal - Various artists /Elmer Bernstein (Score)
To Live and Die in L.A - Wang Chung
Merry Christmas Mr. Lawrence - Ryuishi Sakamoto
Shaft - Isaac Hayes
Ladyhawke - Andrew Powell/Alan Parsons Project
Koyaanisqatsi - Phillip Glass
The Thing - Ennio Morricone
Honorable mention: Blues Brothers Soundtrack