Benefit: Richard Tucker Music Foundation Montserrat Caballe, originally scheduled to perform, was unable to appear when inclement weather in Spain prevented her from flying to the U.S. for this performance. She was replaced on the program by Susan Dunn. Also, Tatiana Troyanos was unable to perform due to illness; she was replaced by Isola Jones. benefit performance choir and orchestra performance 1986-01-12T20:00:00