Sundirt owes a debt to Messiaen’s Dyptique for organ, in which the first movement portrays the turbulence of life on earth and the second movement portrays celestial life (the latter was incorporated into Quartet for the End of Time).  Sundirt follows suit, adding an introductory movement.  The middle (“earth”) movement is an exercise in cross-cutting block construction, while the last movement is composed in layers that independently untwine from the main strand. The premiere was on the campus of Indiana University. Thanks to Christiaan Crans for conducting.