and at the start I don't hear the "B" of Bauc but rather a hard G. The "chorus" is a doozy, you can't really tell them words that much from all the orchestration.
I really hear Maribel (maribelle) on 1:43, but it just might be my imagination.
I had a feeling it was in latin but since I only know spanish pronunciation I cannot decipher words at all, only sounds.