https://www.mljtrust.org/sermons-online/ephesians-5-19/true-melody/

In this sermon on Ephesians 5:19 titled “True Melody,” Dr. Martyn Lloyd-Jones expounds what he calls the characteristics of Christian music based on this Scripture passage. He says that for Christians, worship music is not about sensory experiences, but Spirit-filled worship and praise of God the Savior. It is not done for human entertainment or for the sake of showmanship, but it is about exalting God and His great Name. For this reason, it is not to be done flippantly or in a crass manner, but the who is worshipped should inform how the church worships. True Christian worship in a church is to be done as a congregation and community of believers who have come together. It is not a time for individuals to demonstrate their musical prowess and ability, but it is time for all Christians to sing as a unified body. Because Christian worship takes place in a church, it is to always be subject to the preaching and teaching of God’s word. To do otherwise would be to commit the great error of the Roman Catholic Church and others and replace the proclamation of God’s word with something else, whether it be music or sacraments. True worship is always done in light of God’s revelation of Himself and of His will to His people.