HAMBURG, GERMANY - JULY 21: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit the Hamburg Elbphilharmonie with General and Artistic Director of the Elbphilharmonie and Laeiszhalle (R) Christoph Lieben-Seutter and the First Mayor of Hamburg Olaf Scholz (L) during day three of their official visit to Germany after two days in Poland on July 21, 2017 in Hamburg, Germany. (Photo by Timm - Pool/Getty Images)
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HAMBURG, GERMANY - JULY 21: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are welcomed before they receive a quick lesson to conduct an orchestra at Elbphilharmonie during day three of their official visit to Germany after two days in Poland on July 21, 2017 in Hamburg, Germany. (Photo by Jane Barlow - Pool/Getty Images)
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HAMBURG, GERMANY - JULY 21: Catherine, Duchess of Cambridge receives lessons to conduct an orchestra at Elbphilharmonie during day three of their official visit to Germany after two days in Poland on July 21, 2017 in Hamburg, Germany. (Photo by Jane Barlow - Pool/Getty Images)
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HAMBURG, GERMANY - JULY 21: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge receive a quick lesson to conduct an orchestra at Elbphilharmonie during day three of their official visit to Germany after two days in Poland on July 21, 2017 in Hamburg, Germany. (Photo by Jane Barlow - Pool/Getty Images)
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HAMBURG, GERMANY - JULY 21: Catherine, Duchess of Cambridge, the Mayor of Hamburg Olaf Scholz and Prince William, Duke of Cambridge visit the Hamburg Elbphilharmonie during an official visit to Poland and Germany on July 21, 2017 in Hamburg, Germany. (Photo by Franziska Krug/Getty Images)
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