34 It is easy to infer from what has just been said that the dignity and force of sacred music are greater the closer sacred music itself approaches to the supreme act of Christian worship, the Eucharistic sacrifice of the altar. There can be nothing more exalted or sublime than its function of accompanying with beautiful sound the voice of the priest offering up the Divine Victim, answering him joyfully with the people who are present and enhancing the whole liturgical ceremony with its noble art.
Source: Musicae Sacrae (Vatican.va)