In this picture taken on Thursday, Feb. 23, 2017, Jan Machacek, of the Tap Tap orchestra, sings during a charity concert in Prague Czech Republic. What was created some 18 years ago in efforts to give kids some extracurricular activity at a renowned school for the disabled in Prague has become a major music act that has drawn millions of listeners and fans, first at home and gradually abroad. (AP Photo/Petr David Josek)
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