Astor Piazzolla

"After this episode, Piazzolla returns to tango and to his instrument, the bandoneon. What was once a choice between the sophisticated music or tango, now would be sophisticated music and tango, but in the most efficient way: to work the structure of sophisticated music with the passion of the tango. In Paris, he composes and records a series of tangos with a string orchestra and he begins to play the bandoneon while standing up, he puts one leg on a chair, a trait that would characterize him on the music scene (Most bandoneonists play sitting down)."
Astor Piazzolla: Chronology of a Revolution, Wikipedia, YouTube - Muerte / Angel, Milonga del angel, Adios Nonino, Verano Porteño, Fracanapa, Lunfardo, Chin Chin, Tristezas de un doble A (Parte I), Tristezas de un doble A (Parte II), Buenos aires, Piazzolla & Bandoneon