Some of the best local youth musicians are preparing to rosin their bows, limber up their fingers and fashion their reeds for a weekend concert. After a COVID-fueled hiatus, the Stockton Youth Symphony will perform Sunday for the first time in four years. The 20-student ensemble will take the stage at 5 p.m. at Stagg High School, performing works by Handel, Haydn, Bach and Verdi. The event is free.