Here is an interesting dark ambient compilation on Middle Pillar records, 1998. There is some neat choral work in here too. Very spooky. This CD is limited to 1000 copies, out-of-print, and hard to find.
Middle Pillar Presents: What Is Eternal
01 The Machine In The Garden - Falling Softly
02 4th Sign Of The Apocalypse - Lady Doe
03 Unto Ashes - Conjuration To Lilith
04 Mors Syphilitica - Petals In Sequence
05 Quartet Noir - Petals From A Rose
06 Loretta's Doll - Lost By Severity
07 Dream Into Dust - Totestadt
08 The Changelings - Malcolm's Righteous Dub (Spacious Mix)
09 The Mirror Reveals - Let All The Poets Sing
10 Backworld - Leaving The Isles Of The Blest (Remix)
11 Tor Lundvall & Tony Wakeford - The Big Nowhere
12 Jarboe - Breathe
13 Athanor - For Whom The Bell Tolls
14 Zoar - The Beauty Of Obscenity