Performers of the 39th annual folk fest include U.K. trad-folk godfather Martin Carthy, spoken-word treasure Shane Koyczan, indie-rock royalty the New Pornographers, Ghana’s genre-jumping Jojo Abot, golden-throated Irish singer-songwriter Lisa O’Neill, Haitian vodou-hip-hop fusionists Lakou Mizik, Mongolian folk-rockers Ajinai, Israel’s exotic Yemen Blues, Ontario’s Bruce Cockburn, England’s Oysterband, Victoria stalwarts the Bills, Emilie & Ogden from Quebec, cinematic roots-rockers Lord Huron from Los Angeles, Montreal’s ethereal Little Scream, klezmer-punk Geoff Berner, blues-rawk revisionists the Harpoonist & the Axe Murderer, and former Be Good Tanya Samantha Parton (who teams up with Americana queen Jolie Holland).