International music stars, Jennifer Lopez and Pitbull were joined on stage by Brazilian pop-star Claudia Leitte to perform the official World Cup song 'We Are One (Ola Ola)'.
The ceremony was followed by the opening match of the tournament - hosts Brazil vs Croatia. The match ended 3-1 in favour of Brazil.
The ceremony was followed by the opening match of the tournament - hosts Brazil vs Croatia. The match ended 3-1 in favour of Brazil.