On November 25 the New York Youth Symphony opened its 50th season with three signature programs on full display. Gabriel Zucker's Universal at Midnight was a product of First Music, the NYYS's long-running program of commissioned premieres. Partnering with the orchestra in that work were musicians from its youth ensemble, NYYS Jazz. And two of the soloists, Alice Ivy-Pemberton and NYYS Concertmaster Samuel Katz (first and second from right), appear courtesy of the orchestra's Roy and Shirley Durst Debut Artist program, which presents young musicians in their Carnegie Hall solo debuts. Joining Ivy-Pemberton and Katz in Ludwig Maurer's Sinfonia Concertante for Four Violins and Strings were Cho-Liang Lin (left) and New York Philharmonic Assistant Concertmaster Michelle Kim. On the podium was Joshua Gersen, in his debut as NYYS music director. Scheduled for March and May at Carnegie are two more First Music premieres: Paul Dooley's Run for the Sun and John Glover's Natural Systems.