This week’s performance by the World Youth Symphony Orchestra features "Phenomenon" by Narong Prangcharoen, Mozart’s Third Violin Concerto with soloist Simone Porter, and "Capriccio Italien" by Tchaikovsky. Carlos Kalmar is the guest conductor for this concert which will be broadcast live at 8 p.m. on Classical IPR. Maestro Kalmar stopped by the studio at Interlochen Public Radio to chat about this week's repertoire.