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
Vatican Museums Paul VI, and was initially hosted in environments under the Square Garden. In 1987, it moved to the main floor of the Apostolic Palace of the Lateran where it opened in March 1991. The Vatican Historical Museum has a unique collection of portraits of the Popes from the 16th century to date, the memorable items of the Papal Military Corps of the 16–17th centuries and old religious paraphernalia related to rituals of the papacy. Also on display on the lower floor are the "papamobili" (Popemobiles); carriages and motorcars of Popes and Cardinals, including the first cars used by Popes. The