Communication hasn’t always come easily to Haeun Jung — at least, not in the traditional sense.Jung, a shy, soft-spoken Union High School junior, first moved to the U.S. as a fourth-grader from her family’s home country of South Korea. She struggled at first, she said, not knowing English and growing accustomed to the culture of her new home in Vancouver.“I had a language barrier,” she said.But Jung soon found a way to communicate where words failed. Jung, now 16, began playing the violin at age 5 at her private school in Korea. In fifth grade, Jung joined the Portland Youth Philharmonic’s youngest orchestra group.“It was nice to not speak,” she said.After rising through the PYP’s ensembles in the past six years, Jung will be a featured soloist in the organization’s upcoming concert at Skyview High School on Sunday. Jung will perform with the Conservatory Orchestra and Wind ensemble, PYP’s second most advanced group.It’s an exciting but nerve-wracking venture for the young performer, she said. Jung will be performing in Sergei Prokofiev’s “Violin Concerto No. 2,” a dark, brooding piece that she said is highly technical. She has been practicing about two hours a day for several months to prepare for the concert, and the practice has paid off.“It’s very mechanical,” she said. “It has a modern feel to it.”Jung makes the piece look effortless, despite its challenges. In a video on her YouTube channel, Jung performs the 10-minute solo in the piece’s first movement, her face set and focused as her fingers dance across the strings.