But I just got out my Finnish-English dictionary and discovered that what they were singing/chanting in my dream, over and over again, was, "Where is Väinämöinen? Who will be our Väinämöinen?"
So that was pretty creepy.
(Luckily, I'm used to picking up bits of languages without knowing I'm doing it, so my brain producing coherent Finnish sentences was not that creepy even though I don't speak Finnish. I really think the drumming was unnecessary, though. And the wailing.)