It is always necessary to remember and be aware that church singing is prayer, and prayers must be chanted with reverence in order to stimulate the faithful who stand in church to pray. Chants and hymns which only delight the ear but by content or manner of performance do not dispose one to prayer are unacceptable. The same applies to those chants and hymns which are incompatible with the given church service, commemoration, or church rubrics. In addition, the behavior of the singers must be reverent and compatible with the high calling of church singers, who unite their voices with the voices of the angels. It is the responsibility of the choir director and the celebrating priest to oversee this, and the priest s directives must be fulfilled without question.