Davyd Booth, a violinist and second keyboard player with The Philadelphia Orchestra, practises a composition for a collaborative concert with Chinese musicians on his piano at his home in New Jersey, the United States, Jan. 29, 2019. More than 45 years after his first trip to China, Davyd Booth, a 69-year-old U.S. musician, still clearly remembered his feeling at the time. (Xinhua/Wang Ying)