Léo Delibes · 1836–1891 · French
| Composed | 1893 |
| Instrumentation | Not yet confirmed. We publish TBD rather than a guess — a wrong instrumentation is a hiring error that costs real money. |
| Duration | 120 minutes |
| Soloists | Opera cast — voice types not stated in any source found; [NEEDS CARLOS] before casting |
| Chorus | Yes |
| Genre | Opera |
| Tier | Discovery — worth programming, rarely heard |
| Editions & hire | Public domain — scores at IMSLP ↗ |
| Source | IMSLP — Kassya (Delibes, Léo) ↗ |