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That Tango began in the tenement blocks of Buenos Aires is uncontested. But exactly how? There are a few theories. They go like this:

In the late 19th century Buenos Aires was booming. A lot of men came over from Europe to work on the docks, railroads and meat packing industries. There weren't enough women to go around - even with brothels running 24/7.

Dancing was an important part of wooing, and given the lack of female partners, men took to dancing with each other in the hopes of improving their moves, and thereby winning the hearts of the girl of their choice. This meant trying to find more intriguing ways of pleasing women - hence the overtly sexual nature of the dance.

They say Tango is making a comeback, but it never really left Buenos Aires.