It is recommended that readers call ahead to confirm that programs have not been canceled or otherwise changed since press time because of recent events.

THE YOUNG AND THE MUSICAL

The Youth Orchestras of Prince William present their first orchestral program of the season. The Youth Symphony Orchestra performs Mozart's Overture to "The Magic Flute," Von Suppe's "Light Cavalry Overture," and Schubert's "Unfinished Symphony." The Concert Orchestra performs "Swedish Rhapsody" and "The Girl From Ipanema." Hofeldt's "Deerpath Triptych" and Bruch's "Scottish Fantasy" highlight the Repertory Orchestra's performance, and the Primo Orchestra presents the "Show Symphony" and "Gypsy Strings." 3 p.m. Sunday. Hylton High School, 14051 Spriggs Rd., Woodbridge. $6; students and seniors, $4. Season tickets available for $20; students and seniors, $12. 703-590-7083.

BATTLEFIELD HIKES

Manassas National Battlefield Park volunteers lead five-mile tours of the fields and woodlots where the First and Second Battles of Manassas took place. An optional 45-minute movie about the battles is shown every hour 9 a.m.-4 p.m. Tours begin at 1 p.m. Saturday. Henry Hill Visitors Center off Sudley Road, Manassas. Entry, $3; children, free. Movie, $3; children, free. 703-361-1339.