Where on Earth Is Carmen Sandiego? video game entitled "Carmen Sandiego Junior Detective." Its theme tune bears a close resemblace to the chorus 'Singt der großen Bassa Lieder' ('Sing songs of the great Pasha') from Mozart's opera "Die Entführung aus dem Serail" ("The abduction from the Seraglio") The script for every "Earth" episode had to meet the approval of Brøderbund Software, which created and, at the time, owned the "Carmen" franchise. Their cause for concern was the level of the violence on other FOX children's shows such as "X-Men" and "Mighty Morphin Power Rangers." Brøderbund did not require this of the creators of the "World" and
Joan Carden sang a concert repertoire including Verdi's "Requiem", appearing with Sydney Philharmonia and other ensembles. Overseas, she sang Gilda ("Rigoletto") at Covent Garden in 1974, Donna Anna ("Don Giovanni") at the 1977 Glyndebourne Festival (in the production by Sir Peter Hall) and with the Metropolitan Opera in 1978. Her American debut, however, was as Amenaide with the Houston Grand Opera opposite Marilyn Horne in Rossini's "Tancredi". She also appeared as Constanza ("The Abduction from the Seraglio") with Scottish Opera in 1978. In 1980, she performed with the National Symphony Orchestra at the Kennedy Center in Washington, D.C. She sang the four