Christa Ludwig, mezzo-soprano Marta Lukin, mezzo-soprano Alice Cucinimezzo-soprano Elisa Brunomezzo-soprano Hertha TOpper,mezzo-soprano Rita Gorr, mezzo-soprano Conchita Superviamezzo-soprano Claudia Eder, mezzo-soprano Fassbaenderrmezzo-soprano Irina Arkhipovamezzo-soprano