The first piece of written music that called itself Tango was written and published in Argentina in 1857. "Toma mate, che" was the song. In this period the meaning of Tango probably meant Tango Andaluz, Andalucian Tango, a style of music from eastern Europe mainly Spain.
The origin of the word "Tango" in Argentina is still a mystery but it is believed to come from Argentina. The most common theory was that the community of African descent put the name of their god with the Spanish word for drum (tambor) and then came up with the word "Tango". In Argentina Tango had a much different meaning then that in Spain. Members of the African community in Buenos Aires certainly joined in and influenced the development of the dance and music, just as members all the other communities in Buenos Aires did.
Nowadays the Tango is something of high class or upper society. It's very sophisticated but, during the times of its origin, it became popular in the slums, or the underbelly of Argentina. The immigrants of Europe, Africa, and other unknown ports streamed into the
Cited: 1. Bandonion: A Tango History by Javier Garcia Mendez, Arturo Penon 2. The Argentine Tango As Social History, 1880-1955: The Soul of the People (Latin American Studies, Vol 3) by Donald S. Castro 3. Tango : An Art History of Love by ROBERT FARRIS THOMPSON