Brazilian artists Caetano Veloso and Gilberto Gil have collaborated with each other — and, as you'll hear in this playlist, with other international artists. Marcos Hermes/Courtesy of the artist hide caption

Gilberto Gil
Caetano Veloso and Gilberto Gil. Marcos Hermes/Courtesy of the artist hide caption
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
Mexican actor and director Gael García Bernal. MIGUEL MEDINA/AFP/Getty Images hide caption
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