When the China National Symphony Orchestra strikes up under the baton of its distinguished conductor at the Cultural Centre tonight, chances are big brother will be watching. Artistic director and conductor Chen Zuohuang's elder brother is Chen Zuo'er, a leading member of the Joint Liaison Group, who may show up to see how his sibling performs tonight and tomorrow. 'My brother also loves music. I believe he'll attend my concert. We are good brothers,' the conductor said. The Chinese National Symphony Orchestra also performs the national anthem in a new film clip to be screened before mainland films in China's 40,000 cinemas from National Day. The orchestra was formerly the Central Philharmonic Society, but was privatised last year in a move to attract more talent and improve quality. It gave its first public concert in Beijing last September before President Jiang Zemin. This time, musicians will strike up at the invitation of the Provisional Urban Council. Mr Chen, China's first Doctor of Musical Arts, said there was great significance in performing here after the handover. Born in Shanghai, he has visited more than 20 countries and regions as a guest conductor for 30 orchestras. Tonight, the orchestra will perform Dvorak's Cello Concerto in B Minor and Berlioz's Symphonie Fantastique. Tomorrow, the musical offerings are Wang Xilin's Night of the Torch Festival and excerpts from the ballets The Mermaid, Red Detachment of Women and The White-haired Girl Suite. Sun Weixue, director-general of the Ministry of Culture's Department of Cultural Exchanges with Foreign Countries, said the performance was another step towards greater cultural understanding between Hong Kong and the mainland. 'We are Chinese. We all belong to the same country,' Mr Sun said. 'Hong Kong people should, of course, know how to sing the national song. More work should be done to promote our culture, step by step,' he added.