The Arapahoe Philharmonic presents a Play-In on Sunday, October 23 at Chaparral High School. The event is for high school orchestra and band students in Arapahoe and Douglas counties, as well as avocational adult musicians in the community to play side-by-side with Arapahoe Philharmonic musicians. Musicians will spend the day rehearsing the first movement of Beethoven’s Fifth Symphony and Sibelius’ Finlandia. The community is invited to attend a FREE 30-minute performance at 6:30 p.m. No tickets are required. 15655 Brookstone Dr., Parker.