Tango, a distinctive dance and the corresponding musical style of tango music, began in the working-class port neighborhoods of Montevideo (Uruguay); and years later in Buenos Aires, Argentina; the area of the Rio de la Plata.
There are numbers of theories about the origin of the word "tango". One of the more popular in recent years has been that it came from the Niger–Congo languages of Africa. Another theory is that the word "tango", already in common use in Andalusia to describe a style of music, lent its name to a completely different style of music in Argentina and Uruguay.
The dance derives from the Cuban habanera, the Argentine milonga and candombe, and is said to contain elements from the African community in Buenos Aires, influenced both by ancient African rhythms and the music from Europe.
Even though the present forms developed in Argentina from the mid 19th century, there are earlier written records of Tango dances in Cuba and Spain, while there is a flamenco Tangos dance that may share a common ancestor in a minuet-style European dance. All sources stress the influence of the African communities and their rhythms, while the instruments and techniques brought in by European immigrants played a major role in its final definition, relating it to the Salon music styles to which Tango would contribute back at a later stage, when it became fashionable in early 20th century Paris.
In Argentina, the word Tango seems to have first been used in the 1890s. In 1902 the Teatro Opera started to include tango in their balls. Initially tango was just one of the many available local dances, but it soon became popular throughout society, as theatres and street barrel organs spread it from the suburbs to the working-class slums, which were packed with hundreds of thousands of European immigrants. The development of Tango had influences from the cultures of several peoples that came together in these melting pots of ethnicities. For this reason Tango is often referred to as the music of the immigrants to Argentina.