3 We hope, therefore, that what St. Pius X rightly decreed in the document which he accurately called the "legal code of sacred music may be confirmed and inculcated anew, shown in a new light and strengthened by new proofs. We hope that the noble art of sacred music - adapted to contemporary conditions and in some way enriched - may ever more perfectly accomplish its mission.
Source: Musicae Sacrae (Vatican.va)