The Orange County Youth Symphony presents its third advanced symphony orchestra camp concerton Friday, Aug. 12, at 7:30 p.m., in the auditorium at Central Valley Elementary School, 45 Route 32, Central Valley. The program includes Symphony No. 94 in G Major (The Surprise”) by Joseph Haydn, and Symphony No. 41 in C Major, K. 551 (Jupiter) by Wolfgang Amadeus Mozart. Admission is free.