Butler County Symphony Orchestra will present its final concert of the season, “Beethoven’s Ninth,” at 7:30 p.m. April 9 in the Butler Intermediate High School auditorium. North Allegheny High School senior Nathaniel Chen, the 36th annual Young Artist Competition winner, will perform “Piano Concerto in G” by Maurice Ravel with the orchestra. Tickets are available at the symphony office, 259 S. Main St., or at showclix.com. Tickets are $20 for adults and $5 for students, plus a handling fee. Call 724-283-1402 or visit butlersymphony.org.