- Chronology: Year 1900
- Location: Vienna State Opera (Hofoper, Wiener Staatsoper)
- Program: Iolanthe
- Conductor: Gustav Mahler (1860-1911)
- Orchestra: Vienna State Opera Orchestra
- Stage design:
- Notes: Vienna State Opera repertoire Gustav Mahler
The 245th evening of the season.
Pyotr Tchaikovsky, Iolanthe (for the 4th time this season).
Léo Delibes, Sylvia (Ballet) (for the 12nd time this season). Conductor: Josef Bayer