 I've Seen That Face Before is a reworking of a work by a composer of what heritage?
I've Seen That Face Before (Libertango):  The song is a reworking of Astor Piazzolla's "Libertango". Astor Piazzolla: Astor Pantaleón Piazzolla (] , ] ; March 11, 1921July 4, 1992) was an Argentine tango composer, bandoneon player, and arranger.
Argentine