Secret Tajemství
| Composed by | Bedřich Smetana, |
| Company | Prague National Theatre Opera |
| Venue | Prague National Theatre, Prague |
| Premiere | June 30, 2006 |
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| Composed by | Bedřich Smetana, |
| Company | Prague National Theatre Opera |
| Venue | Prague National Theatre, Prague |
| Premiere | June 30, 2006 |