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.
Ethno jazz
As mentioned before, Brazilian music had an important influence in Latin-jazz. This began with the style called "samba", which comes from a combination of African dances and march rhythms from the 19th century. The samba rhythm is characterized by an emphasis on the second beat of each measure. Unlike Cuban music, this style does not have a clave pattern, resulting in a more relaxed sensation and less tension. Brazilian music was introduced to the United States around the 1930s by Hollywood, with songs like “Tico Tico” and “Brazil,” but lost popularity over the coming years until its revival in 1940, when saxophonist Stan Getz and guitarist Charlie Byrd recorded the album "Jazz Samba" with Verve Records; the track "Desafinado" reached #1 status in the pop charts and won the Grammy for Best Solo Performance.