Music of Vatican City a result, reformers like Palestrina revised the rules behind Gregorian chanting, which were printed by the Medici Press in Rome; these reforms continued to be followed to the present day. A traditional musical instrument was the pipe organ. After the end of the Papal States the Popes' ability to sponsor composers and musicians waned. However it did not end entirely nor did interest in the subject. Pope Pius X and Pope Pius XII both wrote on the subject. In modern times John Harbison and Gilbert Levine have composed or conducted for the Vatican. Although not of the Vatican a Christmas
The Yugoslav Auschwitz and the Vatican "Jasenovac, das jugoslawische Auschwitz und der Vatikan" published by Ahriman-Verlag GmbH (January 31, 2001). The Yugoslav Auschwitz and the Vatican The Yugoslav Auschwitz and the Vatican is a book written by Vladimir Dedijer, World War II Yugoslav Partisan and revolutionary, a university professor and a human rights activist.The book is a shortened version of Dedijer's two books written in Serbian: "Vatikan i Jasenovac" and "Vatikan i Jasenovac Dokumenti", published by Rad Publishing House Belgrade in 1987. It was published in English under the title, "The Yugoslav Auschwitz and the Vatican: The Croatian Massacre of the Serbs During World War II"