Ástor Piazzolla's "Libertango" Performed by Yo-yo Ma and Friends

Something to accompany Robert Badger's latest post, on the "prominent Argentine tanguero" who "grew up partially in the United States where he was exposed to jazz and Bach at an early age" — Astor Piazzolla. "Piazzolla’s new tango was very controversial in Argentina," Mr. Badger informs us. "It took a while for it to become accepted. Piazzolla even found himself the object of death threats."