Rock band O.A.R. returns to Portland on Sept. 11. The band's 7:30 p.m. show will be at Merrill Auditorium. Special guests are Parker House and Theory.

Tickets go on sale at noon on Friday, July 25 at PortTix. Tickets are $30 in advance, $32.50 day of the show. Contact PortTix at 842-0800 or go to www.porttix.com.