Thought to be the oldest surviving monotheistic texts in the world, the gathas, or hymns, of Zoroastrianism can be roughly dated to 4,000 B.C. Esoterics conductor Eric Banks has woven these ancient melodies into Daman, his evening-length choral opera (scored for 40 solo voices) based on the religion’s creation myths and the battle between good and evil. With singers encircling the audience, the surround-sound effects will intensify the drama. At the Olympic Sculpture Park Pavilion, 2901 Western Ave., 8 p.m. Sat., Oct. 11, and at Holy Rosary Catholic Church, 4139 42nd Ave. S.W., 3 p.m. Sun., Oct. 12. $10-$20. 935-7779, www.theesoterics.org. GAVIN BORCHERT

Sat., Oct. 11, 8 p.m.; Sun., Oct. 12, 3 p.m., 2008