Andreia Pinto-Correia, originally from Lisbon, is deeply influenced by Iberian folk music. Her 10-minute “Elegia a Al-Mu’tamid,” an elegy to a forgotten 11th-century poet-king, is like an aural fabric of piercing sustained harmonies, restless melodic bits and gurgling instrumental bursts. Crucial solo lines break through, especially a dark, intense melody for viola.