| Answer | Crossword Clue |
|---|---|
| ACTONE | Opening opera part |
| ACTI | Opera opening |
| COSI | Mozart opera title opening |
| COSI | Opening of a Mozart opera |
| AIDA | Opera written to celebrate a canal opening. |
| preludes | An introductory piece of music, most commonly an orchestral opening to an act of an opera, the first movement of a suite, or a piece preceding a fugue |
