Gilberto Gil, pictured here on the cover of Luar (A Gente Precisa Ver o Luar), is one of the many artists we listen to this week to understand the concept of "saudade." Courtesy of the artist hide caption

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Mexican actor and director Gael García Bernal. MIGUEL MEDINA/AFP/Getty Images hide caption

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Bebel Gilberto is one of many new artists re-interpreting the songs of Tropicalia on Red Hot Rio 2. courtesy of the artist hide caption

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