Montserrat Caballe/Nancy Williams/Richard Tucker/Sherrill Milnes
Montserrat Caballe/Richard Tucker/Sherrill Milnes/Nancy Williams
Montserrat Caballe/Sherrill Milnes/Richard Tucker
Richard Tucker/Giorgio Tozzi/Montserrat Caballe/Sherrill Milnes/Nancy Williams
Sherrill Milnes/Richard Tucker/Giorgio Tozzi/Montserrat Caballe/Nancy Williams
Giorgio Tozzi/Richard Tucker/Montserrat Caballe/Nancy Williams/Sherrill Milnes