Rugla

actually, the girls sing in icelandic on thi song. the lyrics are same as in "Ugla:"

ég er ugla su-sumar ugla

ég er ugla su-sumar ugla

English translation:

I'm an owl su-summer owl

I'm an owl su-summer owl

p.s.: please, next time make sure you add the accent marks where needed on the song titles.

I believe they use a musical saw on this track.

indeed there is one, and they use it in many other songs as well. as a matter of fact, the short song "Saga" in performed solely with them.