tdf,
I reccomend that you have a listen to the following Celtic Frost releases, as these releases are their best works, and are classics in their genre !!!.
Morbid Tales (1984)
To Mega Therion (1986)
Into the Pandemonium (1987)
Also ...
Hellhammer `Apocalyptic raids` (very influential, and hard to get E.P)
The Best of Celtic Frost (compilation)
See if you can download a song called `Circle of the Tyrants` or `Morbid Tales` and see what you think !!!
For more info (click here)
__________________
For in each delve and greenwood,
far wiser creatures play,
and in their veins and sinews,
live the gods of yesterday.
Be excellent to one another !!!.