Ashwin: Welcome to the Nex thread! And thanks for your sharing your pictures from Argentina and as well thanks to Matt for playing his part of the story .
Particularly like the "buffoon" with the accordion, got the decisive moment for a truly captivating expression here, a great composition plus a very appealing B&W conversion.
Two every day life captures from the streets:
NEX-5N, 16mm/2.8 @ f/7.1 & ISO 250
NEX-5N, 18-55mm/3.5-5.6 @ f/8.0 & ISO 3200
Hope you like it and thanks for your interest.