The Oldest Tango 
The oldest tango which is still in the repertoire of Tango orchestras was written by Rosendo Mendizabal, a pianist working in a club, and was named, after one of their regular clients who came from the province called Entre Rios, El Entrerriano. The tango was written in the 1890s.
The first great tango was written around 1905 by Angel Villoldo, one of those singers with a guitar. It was El Choclo, one of the two tunes that almost everyone will instantly recognise as Tango. Villoldo wrote many influential tangos, and his tunes are still played regularly today. He is the first great Tango artist that we can name and know a few facts about. Interestingly, he wrote El Choclo as a comedy song which he performed himself - choclo means literally corn-cob, but he was using it in a less literal and more bawdy sense. Villoldo's words quickly fell out of use, and were replaced in the 1940s by a lyric proclaiming grandly that with this tango the Tango was born.
