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
Prisoner in the Vatican entire city save for the Apostolic Palace; the inhabitants of the city then voted to join Italy. For the next 59 years, the popes refused to leave the Vatican in order to avoid any appearance of accepting the authority wielded by the Italian government over Rome as a whole. During this period, popes also refused to appear at Saint Peter's Square or at the balcony of the Vatican Basilica facing it, as the square in front of the basilica was occupied by Italian troops. During this period, popes granted the "Urbi et Orbi" blessings from a balcony facing a courtyard,