- European Opera Tours - Specializes in opera, ballet and music tours in Europe and Russia.
- Inspired Diversions - Provides opera and classical music in beautiful and historical settings.
- Lyric Opera of Chicago - Specialized in information about lyric opera of chicago.
- Opera House Arts - The official website of stonington maine opera house.
- Operas Abroad - Provides opera, ballet and classical music of the highest quality in some of the most attractive cities in the world.
- San Francisco Opera - The official website of the San Francisco Opera House.
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