| Role | Voice Part | Classification |
|---|---|---|
| Klytemnestra | Mezzo-Soprano | L |
| Elektra | Soprano | L |
| Chrysothemis | Soprano | L |
| Orest | Baritone | F |
| Aegisth | Tenor | F |
| Tutor (Guardian) of Orest | Bass | S |
| 5th Maidservant | Soprano | S |
| The Overseer | Soprano | S |
| Four Maidservants | Contralto, 2 Mezzo-Soprano, Soprano | B |
| The Trainbearer of Klytemnestra | Soprano | B |
| An Old Servant (Slave) | Bass | B |
| A Young Servant (Young Slave) | Tenor | B |
| The Confidante of Klytemenestra | Soprano | B |
| 6 Additional Maidservants | Sopranos & Altos | CB |
| Minimum Chorus: 32 | ||
| Divisi: SATB |
Schedule C