Northeast China's Changchun City is known as the cradle of China's film industry and the 15th Changchun Film Festival (CCFF) is now being held. A symphony concert under the theme of "Night of Changchun Film Festival," one of the "Cradle of Tribute" concert series, is now being staged. More than eight pieces of music from classic films, including "Visitors from Icy Mountain", are being played by Changchun Film Symphony Orchestra. Follow CGTN's Liu Hui backstage and get a sneak peek at how musicians are preparing for the concert.