Theater projects have included "Show Boat" in London at the Royal Albert Hall as well as for the Lyric Opera of Chicago and San Francisco Opera; a new musical, "Rebecca", for Vienna's Raimund Theater, Stuttgart's (presented by Stage Entertainment), and in St. Gallen, Switzerland; "Tibet Through the Red Box", a new play by David Henry Hwang for the Seattle Children's Theatre; "The Little Prince" with Oscar-winning composer Rachel Portman; "Napoleon" in the West End; "The Little Mermaid" for Disney on Broadway; the musical of "The Little House on the Prairie" and "The Master Butchers" at the Guthrie Theater, and "Aladdin" in Disneyland. For the 2011 Glimmerglass Festival, Zambello, Terrence McNally, and Deborah Voigt collaborated to produce the stage show "Voigt Lessons" which was revived in 2015 at the Art House in Provincetown, Massachusetts.