El Choclo
La Cumparsita – Juan D’Arienzo
I love the conductor in this video and that whole line of bandoneons is totally exciting for a free-reed freak like me. Spectacular!
And one more piece to really show off the bandoneon.
The bandoneon looks very much like the Chemnitzer concertina, and in fact they are similar instruments. Today the Chemnitzer concertina is typically associated with the Chicago style of Polish-American polka music, while the bandoneon is at the very heart of the tango.
27th Street 
I seem to learn something every time I come here!