Quadrochosis is the name of Experimental Rock artist Zack Penka. He is currently working on an album called "Sentinels Vow" which is due to be out sometime in early 2011. Quadrochosis takes influence from Porcupine Tree (as well as their frontman, Steven Wilson), King Crimson, Pink Floyd, Nick Drake and many other Experimental, Progressive, Folk and Electronic artists. Read more on Last.fm