Hildegard Behrens
— Elektra
Deborah Voigt
— Chrysothemis
Brigitte Fassbaender
— Klytämnestra
Donald McIntyre
— Orest
James King
— Aegisth
Judith Goldberg
— The Confidant
Jean Rawn
— The Trainbearer
Philip Creech
— A Young Servant
Richard Vernon
— An Old Servant
Herbert Perry
— The Guardian of Orest
Janet Hopkins
— The Overseer of the Servants
Ellen Rabiner
— Maid Servant
Kaaren Erickson
— Maid Servant
Jane Shaulis
— Maid Servant
Elizabeth Byrne
— Maid Servant
Theresa Cincione
— Maid Servant
James Levine
— Conductor