Some of the tracks on Interzone are laid back, albeit with a palpable sense of restrained energy. In the other tracks there is no restraint, just unbridled rock. Two of my favorites are below. I suggest playing them loud. No, louder. That's better ...
"Come to Harm" --
"The Sanctuary" --
Facebook for Treehouse
Vacant Valley's Big Cartel page
Treehouse's Bandcamp (for older releases)