- Chicago Opera Theater - Official website, with online tickets purchase, year's season, company information.
www.chicagooperatheater.org
- da Corneto Opera - Non-profit concert opera company that features season schedule, ticket information, mailing list, support information, and news.
www.dacorneto.org
- Lyric Opera of Chicago - Major American opera company respected worldwide for its demanding performances and devoted subscriber base.
www.lyricopera.org
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