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
Prophecy of the Popes (including punctuation and orthography) of the 1595 "Lignum Vitae", which consisted of three parallel columns for the popes before 1590. The first column contained the motto, the second the name of the pope or antipope to whom it was attached (with occasional errors), and the third an explanation of the motto. There are some indications that both the mottos and explanations were the work of a single 16th century individual. The original list was unnumbered. For this group of popes, the published text only provides names for the first three (i.e., those who were popes between the appearance of the