Related Clues:
- 20-Across, for one
- Catalogued compositions
- Wagner creation
- Beethoven's 'Fidelio,' e.g.
- P.D.Q. Bach's "The Stoned Guest," e.g.
- Work with choruses
- Rossini genre
- Price production
- ''Don Giovanni,'' for one
- Firefox alternative
- 77-Across is one
- Marx Brothers setting
- Wagnerian production
- ''Dido and Aeneas,'' for one
- Word with ''soap'' or ''grand''