The folks at Sublime Frequencies collective in Seattle are no strangers to scouring the world for rare and beautiful music (recently their label put out local DJ Carl Hamm’s wonderful compilation of Malaysian and Singapore rock from the ’60s). Founding member Hisham Mayet has helped introduce guitar bands from the Sahara such as Group Doueh, Group Inerane and Group Bombino. But he’s also a filmmaker helping to redefine the ethno-graphic film. This week he’ll show two films, roughly an hour each: “Vodoun Gods on the Slave Coast” a 2012 film about West African possession ceremonies in Benin, the birthplace of voodoo; and “The Divine River: Ceremonial Pageantry in the Sahel,” which explores life along the mystical Niger River. You don’t have to be an anthropologist to join the fun, which takes place at Gallery5 on March 13, from 7-10 p.m. Appropriately, Hamm will DJ. $9. gallery5arts.org.