David Lau, who was a member of the Portland Youth Philharmonic and a winner of the Young Artists Concert competition, has won an audition to the august ensemble, the Leipzig Gewandhaus Orchestra. Â You may have heard of one of their earlier music directors: Felix Mendelssohn. Â David studied at the Interlochen Arts Academy, the Juilliard School, and the Musikhochschule Lubeck, Germany.