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.
Samba (Brazilian dance)
The dance derived from the Maxixe and followed the arrival of the Choro (another samba musical style). It left most of the Maxixe's Polka elements behind but maintained the entwined leg movements of the Argentine tango, although adopting a more relaxed posture than the latter. Many see this form of Samba as a combination of Waltz and Tango. Several Brazilian dance studios use elements and techniques from these two dances to teach Samba de Gafieira steps and dance routines.