The big-ticket attraction is the chance to hear the Oregon Symphony tear into Richard Strauss’ Also sprach Zarathustra, the tone poem best known for its use in the opening and closing moments of 2001: A Space Odyssey. The true draw for this run of shows is an appearance by violinist Leila Josefowicz, who will be on hand to perform “Scheherazade.2,” a lush, oblique symphony written expressly for the musician by brilliant composer John Adams, and a performance of Charles Ives’ haunting “The Unanswered Question,” which the Symphony recorded for its Grammy-winning album Music for a Time of War. by Robert Ham