Brazilian musician and Minister of Culture Gilberto Gil has decided to leave his government post to focus his attention on his music career. When Luiz Inácio Lula da Silva tapped Gil to be Culture Minister in 2003, Gil was only the second black person to serve in Brazil's cabinet. The government's loss now, though, is music's gain. Gil is one of the key participants in Tropicália (or Tropicalismo), a cultural movement that emerged in the late 1960s during a period of political and cultural crisis to flourish in Brazilian film, theater, visual arts, literature, and...