Arturo O'Farrill and The Afro Latin Orchestra's new album, The Offense of the Drum, comes out May 6. Rebecca Meek/Courtesy of the artist hide caption

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Cesar Chavez, co-founder of the United Farm Workers, speaks at a rally in 1977. Cathy Murphy/Getty Images hide caption

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Federico Aubele performs at a Tiny Desk Concert in February 2014. Jim Tuttle/NPR hide caption

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

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Vocalist Martirio is a part of Spanish history, as told through music. Courtesy of the artist hide caption

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La Santa Cecilia performs a Tiny Desk Concert in November 2013. Meredith Rizzo/Meredith Rizzo/NPR hide caption

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The Arturo O'Farrill Octect performs a Tiny Desk Concert in June 2013. Hayley Bartels/Hayley Bartels/NPR hide caption

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The Buika performs a Tiny Desk Concert in June 2013. Hayley Bartels/Hayley Bartels/NPR hide caption

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