Parker founded Psi in 2001 with the assistance of Martin Davidson of Emanem Records.

"[1] From 2001 to 2012, Psi released nearly 90 CDs,[4][5] after which Parker "decided that it's time to pause and think again.

"[6] Parker stated that the goal of the label was "to represent my own music in the way I like to see it done and to draw people's attention to the work of other musicians who I feel are not given the prominence they deserve."

According to writer Richard Williams, Psi "developed its own identity, visual and tactile as well as musical," with releases that featured a "unified (rather than uniform) design.

"[6] Critic Stuart Broomer described the label as having "the feeling of an expanded musical family," given the fact that many of the musicians had played with Parker prior to recording with Psi.