This is an article about the rock band "Circulatory System". For the human organ system, see circulatory system.Circulatory System is a psychedelic rock musical ensemble formed by musician/painter Will Cullen Hart, and featuring Derek Almstead, Suzanne Allison, Peter Erchick, John Fernandes, Charlie Johnston, and Heather McIntosh.Hart, part of the Elephant Six Collective, was one of the lead players in The Olivia Tremor Control.