Bjork Track ID

[Ally]

Whoever was soundchecking the main stage at the Rockness festival the other weekend kept playing a couple of what I'm pretty sure were Bjork songs back to back. I'm sure the first one was Human Behaviour but the other one I don't know, and it was soooo wicked.
It was a kinda simple tune, and the groove was all in the bassline - it repeated over four bars and was that kind of bouncy bassline. My fading memory of the track tells me that the bassline was a little bit like Got Glint? by the Chems. Anyone have any idea what track I'm talking about?

Thanks.