Theo’s operatic highlights include Papageno in Die Zauberflöte at Los Angeles Opera and Israeli Opera, Count in Le nozze di Figaro at Opera Theatre of Saint Louis and Israeli Opera, Schaunard in La Bohème at Seattle Opera and Atlanta Opera, Escamillo in Carmen at Atlanta Opera, the world premiere of Denis & Katya at Opera Philadelphia, Flight at Des Moines Metro Opera, Candide at LA Opera, Carmen at LA Opera, and Lakmé with Washington Concert Opera. A frequent performer of Philip Glass, he performed in Satyagraha at LA Opera, Les Enfants Terribles at Opera Omaha, and the US premiere of The Trial at Opera Theatre of Saint Louis. Theo has concertized with the Los Angeles Philharmonic, Vocal Arts DC, Castleton Festival, Salzburg Mozartwoche, St. Paul Chamber Orchestra, Orchestre National de Lille, Israel Philharmonic, Marlboro Music, Bard Music Festival, Portland Symphony, and New York Festival of Song. He was a 2016 Metropolitan Opera National Council Auditions Grand Finalist and a recipient of a 2018 Sara Tucker Study Grant from the Richard Tucker Music Foundation. Future seasons see him at Hamburgische Staatsoper as Prosdocimo in Il Turco in Italia, and at Opernhaus Zürich.