Musically it sounds a lot like a song called The Four Horsemen from a band called Aphrodite's Child. The drum part is almost identical. This band was lead by Vangelis, the composer, in the early seventies. The song is from a concept album they did in '71 called 666, which is based on The Revelation to St. John. It's one of those rare gems for people who like '70's rock. Check it out.