Christine Brewer, Susan Graham, Denyce Graves, Dwayne Croft, Thomas Hampson, Jerry Hadley, Patricia Racette, Sylvia McNair, and Stephanie Blythe have made appearances in St. Louis productions. As of their 2022 Festival Season, OTSL has presented 33 world premieres, including: Stephen Paulus: The Postman Always Rings Twice (1982) Cary John Franklin: The Loss of Eden (2002) David Carlson: Anna Karenina (2007; libretto by Colin Graham) Terence Blanchard: Champion (2013; libretto by Michael Cristofer) Ricky Ian Gordon: Twenty-Seven (2014; libretto by Royce Vavrek) Jack Perla: Shalimar the Clown (2016; libretto by Rajiv Joseph) Huang Ro: An American Soldier (2018; libretto by David Henry Hwang) Terence Blanchard: Fire Shut Up in My Bones (2019; libretto by Kasi Lemmons) Tobias Picker: Awakenings (2022; libretto by Aryeh Lev Stollman) Champion, Twenty-Seven, and Shalimar the Clown were part of an OTSL series of commissioning new operas, under the "New Works, Bold Voices" initiative. In addition, OTSL has given at least 14 American premieres, including Michael Berkeley's Jane Eyre; Benjamin Britten's Paul Bunyan; Rossini's Il viaggio a Reims (The Journey to Reims); and Judith Weir's The Vanishing Bridegroom (under the title Highland Wedding). The company trains young artists in the Gerdine Young Artists program, named for Opera Theatre's founding board chairman, Leigh Gerdine. The Gerdine Young Artists serve as the annual chorus for the company, as the company does not retain a resident chorus. OTSL chorus directors have included Donald Palumbo, Cary John Franklin, Sandra Horst, and Robert Ainsley. In February 2020, OTSL announced the appointment of Walter Huff as its next chorus director. Due to the COVID-19 pandemic however, Huff never formally took up the post. Administration Succeeding Gaddes as OTSL General Director was Charles MacKay, who held the post from 1985 to 2008. MacKay had previously served as OTSL Executive Director, beginning in 1984. MacKay led the campaign to construct and fund the new Sally S. Levy Opera Center, a new and permanent administrative home and year-round rehearsal facility for the organisation. In addition, in 2005, OTSL adopted projected English-language supertitles in the theatre. From 1985 until his death in April 2007, the OTSL Artistic Director was Colin Graham. From 1991 to 2017, OTSL's Music Director was Stephen Lord. Lord subsequently held the title of OTSL music director emeritus until his resignation in June 2019, following publication of allegations of sexual misconduct. In June 2017, OTSL announced the appointment of Roberto Kalb as its resident