Stoplight Entertainment

These guys run out in front of stopped traffic and perform for about 30 seconds and then come looking to get paid by the stopped drivers. They seem to do a brisk business as people generally pay them and they are scattered all over the city. There are many of these guys standing in front of the Museo Nacional de Bellas Artes practicing and maybe training. In the background of this picture is an elevated section of the Blue Metro line (location).