The day of the cafes

Today, the city is celebrating the existence of the the traditional cafes (we call them Cafes Notables). And usually when the government of the city wants to celebrate something, they hire some tango bands to play, and this is not going to be the exception.
The cafes notables are a must-see. So make sure you go to any of them during your stay. And remember that if you go today (monday 26th) you might also see a traditional tango orchestra or some tango dancing, or something tango related.

Where?
London City - Avenida de Mayo 599
6 Billares - Avenida de Mayo 1265
La Perla - Avenida Pedro de Mendoza 1899
Bar de Cao - Independencia 2400
El Preferido de Palermo - Jorge L. Borges 2108
Etc, etc (etc means, do your own research or pay for the information)