Friday, April 1 

Visual artist Matthew Barney and writer/composer Jonathan Bepler don’t make short films. Their previous cinematic collaboration, The Cremaster Cycle, weighed in at five parts and about seven hours. The three parts of their latest epic, River of Fundament, clock in at 350 minutes, but those who appreciate Barney’s heady post-grad surrealism expect no less. Fundament documents three live performances of an avant-garde opera based on Norman Mailer’s novel Ancient Evenings, interspersed with scenes set in the novelist’s Brooklyn Heights home. Part 1 shows tonight at the Portland Museum of Art (7 Congress Square) at 6:30 p.m., followed by Parts 2 and 3 on Saturday and a screening of all three on Sunday. Tix: $8 ($15 weekend pass). 775-6148. portlandmuseum.org.