I do have the NYCB, Royal Ballet, the Mariinsky and the Bolshoi "Symphoni in C", which is one of my favorite ballets. I would like to exchange with a copy of Concerto Barocco, again one of my favorite ballet but quite unoptainable it seems.( I do have the Concerto Barroco filmed in Germany, which Balanchine apparently greatly disliked and which is almost unwatchable.)