the Rio carnival parade is for samba schools to compete with their sisters samba-schools, this competition is the climax of the whole carnival festival in this city, related to the samba-schools environment. Each school chooses a theme to try to portray with their entry.The samba schools work to build the best floats, costumes, lyrics, aesthetics, to represent their themes (in Carnival terminology called "enredo"), and to include the best music they can from their drumming band called the bateria. There are many parts to each school's entry including the six to eight floats and up to 4,000 ( four thousand ) revelers per Samba-school of the so-called Special group.