Italian prog is best prog.
Goblin - Suspiria OST
Goblin - Zombi: Dawn of the Dead OST
Goblin - Tenebre OST
Goblin - Profondo Rosso OST
Goblin - Phenomena OST
It has become apparent that simply not enough people are familiar with the films of Dario Argento, and as a result, not familiar with Goblin.
Goblin were an old Italian prog band originally under the name of Cherry Five. Eventually, they changed their name to Goblin, and began composing music for movies, in particular, the films of Dario Argento, as well as the Italian Dawn of the Dead, Zombi, and a bunch others I won't get into.
Needless to say, this stuff is amazing. Further, if you have not seen the actual films, I highly recommend them all. Especially Suspiria and Tenebre.
Zombi: Dawn of the Dead