Samba
Although samba exists throughout Brazil – especially in the states of Bahia, Maranhão, Minas Gerais, and São Paulo – in the form of various popular rhythms and dances that originated from the regional batuque of the eastern Brazilian state of Bahia, a music form from Cape Verde, samba is frequently identified as a musical expression of urban Rio de Janeiro, where it developed during the first years of the 20th century. Early styles of samba - and specifically samba de roda - are traced back to the Recôncavo region of Bahia during the 17th century, and the informal dancing following a candomblé ceremony. It was in Rio de Janeiro that the dance practiced by former slaves who migrated from Bahia came into contact with and incorporated other genres played in the city (such as the polka, the maxixe, the lundu, and the xote), acquiring a completely unique character and creating the "samba carioca urbana" (samba school) and "carnavalesco" (Carnaval school director). Samba schools are large organizations of up to 5,000 people which compete annually in the Carnival with thematic floats, elaborate costumes, and original music.
Brazilian Carnival
Originated in Bahia, but developed in Rio de Janeiro between the end of the 19th century and the first years of the 20th century, the samba is still one of the most popular music styles of Brazil. From intimate samba-canções (samba songs) sung in bars to explosive drum parades performed during carnival, samba always evokes a warm and vibrant mood. In the 1930s, a group of musicians led by Ismael Silva founded in the neighborhood of Estácio de Sá the first samba school, Deixa Falar. They transformed the musical genre to make it fit better the carnival parade. In this decade, the radio spread the genre's popularity all around the country, and with the support of the nationalist dictatorship of Getúlio Vargas, samba became Brazil's "official music."