Berthold Tours John Stainer. The works he edited included "Iphigenia in Aulis", "Iphigenia in Tauris" and "Orpheus" by Gluck; "L'Étoile du nord" by Meyerbeer; "Il seraglio" and "Zauberflöte" by Mozart; "Guillaume Tell" by Rossini; "Der Fliegender Holländer" and "Lohengrin" by Wagner; "Euryanthe" by Weber; Mendelssohn's "Elijah"; Gounod's "Mors et Vita" and "Redemption", numerous piano albums, and many others. He also arranged scores of Gilbert and Sullivan operettas for piano and voice. He was also a composer and composed a cantata for female voices called "The Home of Titania" (1893); an anthem entitled "A Festival Ode" (1893) for organ and soprano, which was
Persian Letters texts and renewed perspectives. Particularly important were the extensively annotated edition by Paul Vernière and the research of Robert Shackleton on Muslim chronology; also studies by Roger Laufer, Pauline Kra and Roger Mercier, which put new focus on the work’s unity and integrated the seraglio into its overall meaning. Others who have followed have looked into the ramifications of epistolary form, the structure and meaning of the seraglio, Usbek’s contradictions. Beginning about 1970 it is religion (Kra) and especially politics (Ehrard, Goulemot, Benrekassa) which predominate in studies on "Lettres persanes", with a progressive return to the role of the seraglio