I have the 2 CD "Cruelty and the Beast" and have been looking for the intro music to Bathory Aria, but with only slight success.
I have read that the words are "Gloria in Excelsis Deo" going from high to low while a piano plays in the background. (Still not sure if that is totally accurate).
In any case the closest sound that I have found to that type of music is:
Gloria in Excelsis Deo - Antoine Brumel
An example is here:
The way COF manipulated the sounds in the beginning is very effective and I was looking for a longer version, if one even existed.
The very small print on the CD booklet (and my poor eyesight) makes it hard to decipher the source.
Thanks in advance for any information.
James