Metal song help

Ive heard this song one time. When I recieved it it came under the name Celtic Frost (band) and the song was their album title MEga Theorin. Problem is they have no song of such name. Nor does this song exist on the album. The song starts off wit ha steady guitar rift and drums throughout. The vocals throughout most of the song is like opera chants. Until about 45 seconds in comes the singer saying about 4 words or so and holding the last one then it repeats. The guitar and drums change for that section as well.Its unbeleivably awesome. I loved it..I just could never find the actual song and if it was even by Celtic Frost..any help would be aweosme

I've seen Celtic Frost live in Hollywood; they were pretty bad ass. I'm not quite sure which song you're talking about, though. Good luck! If I find anything out, I'll be sure to let you know.

Edit: Maybe this will help you.http://en.wikipedia.org/wiki/To_Mega_Therion_(album)