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Violinist Edvin Marton plays on a 300-year-old Stradivarius violin during a concert in Bucharest, Romania, on April 20, 2018. (Xinhua/Gabriel Petrescu)

Violinist Edvin Marton plays on a 300-year-old Stradivarius violin during a concert in Bucharest, Romania, on April 20, 2018. (Xinhua/Gabriel Petrescu)