Mali Obomsawin, an indigenous bassist-vocalist-songwriter-composer from the Abenaki First Nation at Odanak, Quebec, will perform two concerts in the Twin Cities, April 16 and 18. On Thursday night, April 16, at 7:30 p.m., she and her sextet will perform a set at the Walker Art Center, before a screening of the Oscar-nominated film Sugarcane. On April 18 at 7:30, the sextet will perform at the Icehouse, 2528 Nicollet.