Opera Theatre of Saint Louis (OTSL) is a summer opera festival held in St. Louis, Missouri. Typically four operas, all sung in English, are presented each season, which runs from late May to late June. Performances are accompanied by the St. Louis Symphony Orchestra, which is divided into two ensembles, each covering two of the operas, for the season. The company's performances are presented in the Loretto-Hilton Center for the Performing Arts on the campus of Webster University. In 2005, OTSL adopted projected English-language supertitles in the theatre.
OTSL was founded in 1976 by Lee Gerdine, Laurance L. Browning, Jr. and James Van Sant. These three hired Richard Gaddes, who at the time was working at The Santa Fe Opera as the first Artistic Director. They signed him as full-time General Director in 1978 at the suggestion of Ed Korn, who was brought in as a consultant from the Metropolitan Opera. The model for OTSL was The Santa Fe Opera, as
The first season in 1976 presented eleven performances of Britten's Albert Herring, Mozart's The Impresario, Menotti's The Medium, and Donizetti's Don Pasquale. This mixture of some standard works, and some new and unconventional operas, was to continue in future seasons and characterize the company's approach. This was achieved on a budget of $135,000. The young singers included Sheri Greenawald and Vinson Cole.
During the early seasons, the company had a major influence with such achievements as first joint BBC/WNET telecast of Albert Herring and in 1983 the first appearance by any U.S. opera company at the Edinburgh International Festival. The first production of a Japanese opera in Japan by any American company was followed by a return to Tokyo in September 2001 to present the Japanese premiere of the classic Genji Monogatari, adapted as an opera by Minoru Miki as The Tale of Genji.