Song of the Mushroom (2002), completed in December 2002, is a collaboration between filmmakers Joel Haertling and Stan Brakhage. With interest in mycology, Haertling made mushroom spore prints directly onto clear 16mm film. A 7.25-second loop was passed from Haertling to Brakhage who added hand painting. This loop was then step-processed utilizing a variety of lighting aspects. Brakhage did the final edit. This was one of the very last films Brakhage made before he left Boulder in January 2003. He died in Canada in March 2003.