Colorful umbrellas long ago replaced concealed knives during frevo parades. AFP/AFP/Getty Images hide caption

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Paco de Lucia in 1982. Paco Junquera/Getty Images hide caption

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Queen Elsa embraces her power to freeze things with the anthem "Let It Go" in Frozen. Disney hide caption

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Fred Ho practices his baritone saxophone in a dressing room before a performance. Joseph Yoon/Courtesy of Fred Ho hide caption

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Dan Reynolds of Imagine Dragons performs onstage at the Amnesty International Concert presented by the CBGB Festival at Barclays Center on February 5, 2014 in New York City. Neilson Barnard/Getty Images hide caption

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Advocates are pushing for the virtues of music education that can't be measured numerically. iStockphoto hide caption

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