The 2014 World Cup begins in Brazil tomorrow. There’s an official World Cup song, but it doesn’t necessarily include any of the homegrown sounds coming out of Rio’s favelas. We’ll explore the roots of favela funk with Morning Shift and Radio M host Tony Sarabia. (Photo: Marcelly de Mello da Silva, 15, practices her “passinho,” or “little step,” moves at a makeshift dance studio in the Borel favela, in Rio de Janeiro, Brazil. (AP Photo/Nicolas Tanner))