I don't know if it's in the same vein, but ... The soundtrack for the movie "Ravenous", a film about cannibalism in the civil war, is definitely pretty macabre. The soundtrack was composed by Damon Albarn & Michael Nyman. It starts off in such a fashion that you're like, "What the hell is this", but morphs into something ... unique. :) (And maybe it's just the movie itself that lends it well to the music, not sure)

Edited at 2009-03-03 04:33 pm (UTC)

First suggestion: create a station seeded by those 3 in pandora.com.

Possible additional seeds:

• Danse infernale de tous les sujets de Kastchei from Stravinsky's Firebird
  
• Orff: Carmina Burana - 01. Fortuna Imperatrix Mundi - O Fortuna
  
• Duo Ye No.2 by C. Yi
  
• I. Derfliegende Höllander, Wagner
  
• The Ride of The Valkyries from "Die Walküre"
  
• Le Sacrifice from Stravinky's Le Sacre du Printemps
  
• Pictures at an Exhibition: Promenade, Mussogorsky
  
• Varèse: Amériques
  
• Piano Sonata No. 2 in B flat minor, Op. 35 "Funeral March", Rachmoninoff
  
• http://www.pandora.com/music/song/bastille+opera+orchestra/illuminations+of+beyond+x+le+chemin+de+linvisible
  

And not classical T Bone Burnett - tooth of crime (amazon)

I thought Night on Bare Mountain was p0rn...

I like Bleeding Heart by Two Ton Boa: http://www.sweetslyrics.com/509329.Two%20Ton%20Boa%20-%20Bleeding%20Heart.html

The lyrics don't give you the full affect of the song - maybe you can find it on U-Tube or something...

I also like the song Sweetness by Luminous Flux - but it may be impossible to find outside of me maybe making you a copy of it. I like their whole album but it was the only one they made I think - a local Seattle band who parted ways. I just finally found out the lead singer's name is Susan Dumett and is currently working under the name Vox Vespertinus (found on My Space). She has an amazing voice!