Reverence should also mean that we will pay attention to the words we sing. It is so easy to switch into auto-pilot without letting the lyrics engage with our minds at all. God deserves better than that. John Wesley wrote is his ‘Rules for Methodist Singers’ “Above all, sing spiritually. Have an eye to God in very word you sing. Aim at pleasing him more that yourself or any other creature. In order to do this, attend strictly to the sense of what you sing and see that your heart is not carried away with the sound, but offered to God continually”

via http://www.theologian.org.uk/pastoralia/music.html by Vaughan Roberts