Three youth musicians, including two local high school students, won the chance to play as part of the Vancouver Symphony Orchestra with their performances Sunday at the orchestra’s 25th annual Young Artists Competition. More than 60 student musicians 18 and younger from Washington and Oregon submitted recordings to the contest judges — in the piano, string and brass or wind categories — with the top three performers in each section going on to perform at the live final round later this year at Trinity Lutheran Church. All nine receive some scholarship money, and the gold-medal winners win the right to perform alongside the orchestra. In the winds category, flutist Julin Cheung, 11, of Shoreline won with his performance from Antonio Vivaldi’s “La Notte,” or Flute Concerto No.