Nice little demo from the satanic black/thrash-metal band from Chile, Black Grail.
Pure unholy blasphemous music with some nice calm songs in the middle. Great example of trve underground BM with a thrashy influense, if you like that sort of thing. Definitively worth getting.
As Black Grail themselves say:
No MP3s! No MySpace! Fuck You!
4. Spermem Satanus
Find it for yourselves/Encyclopaedia Metallum