Who the hell sings that?

Does anyone have any idea who sings the song at the beginning and end of the Northern Exposure episode "Spring Break" where they have the running of the bulls? Something to the effect of "We all go insane..."

I've googled the heck out of it and tried some lyric sites and come up bupkiss. Some of them say it is Lindsey Buckingham but that is not it at all.

Any ideas?