<P> The fourth section includes a list of petitions ending te rogamus audi nos (we beseech you to hear us) from which the appropriate prayers can be chosen for a particular occasion, but always ending with petitions for the whole church, for the ministers of the Church, for the lay faithful and for all humanity . The rubrics printed before the litany indicate that other petitions "suitable to the occasion" and in the form proper to the Litany may be added "at the proper place". </P> <P> The final part of the litany consists of a brief invocation calling on Christ to hear the prayers, and a closing collect . </P> <P> The Litany of Saints is used prominently at the Easter Vigil, the Mass celebrated on the night before Easter Day . At this Mass, adults who have chosen to become Catholic receive the Sacraments of Initiation in the form of Baptism, or simple Reception, with Confirmation and Holy Communion . Following the readings from Scripture and just before the actual rite of baptism or confirmation, the Litany of Saints is sung . Even if there is no - one to be baptized, the Litany may be sung for the blessing of holy water in the font . But if the font is not blessed (i.e. holy water is blessed in a simple container on the sanctuary), the Litany is not used . </P> <P> The Litany given for the Easter Vigil in the Roman Missal contains a shortened list of saints: </P>

When is the litany of the saints sung