Born in Palestine and based in Europe since 2002, composer, singer, and musician Kamilya Jubran is among the leading figures of the experimental Arabic music scene. For her Pierre Boulez Saal debut, she per­ forms two contrasting sets: Together with her longtime musical partner, Swiss trumpet player and sound artist Werner Hasler, she presents Extend WA, an exploration of improvised musical dialogue born out of their album WA (“and” in Arabic). For the concert’s second half, the duo is joined by cellist Soizic Lebrat and bassist Charlotte Testu, collaborators from Jubran’s project Terrae Incognitae featuring female musicians from different backgrounds, in the world premiere of a new piece titled Bast (Arabic for “expanding” or “widening”).