Inspired by a general love of the tango, and more specifically the tango of Astor Piazzolla, on the part of Yo-Yo Ma, the Soul of the Tango album is a masterful work of the nuevo tango, played by Ma's cello and many of Piazzolla's former associates. Piazzolla's old guitarists Sergio and Odair Assad even showed up to work on a pair of tracks. Astor Piazzolla (1921-1992): Libertango Tango, Andante, Allegro, Sur: Regreso Al Amor, Le Grand Tango, Astor Piazzolla: Fugata, Jorge Calandrelli. Astor Piazzolla: Tango Remembrances, Astor Piazzolla: Mumuki, Tres Minutos Con La Realid Ad, Milonga Del Ángel, Café 1930