Andrew Wright Bennett, also known as "Andrew the Harpist" is a "Psalmist," like David, and with a large "Paraguayan" harp and a small lyre, both of which he built, Andrew sings in worship to the Lord, and in prayer, singing also the Scriptures, even preaching the Word of God in song, while playing the harp and lyre.
The spiritual ministry of the harp and lyre is ancient. When David played the harp or lyre before King Saul, the evil spirit that troubled King Saul left him for a season. In the Scriptures, the harp and lyre are often associated, with worship, prayer, and prophecy.
When Andrew just simply plays the harp or lyre in worship to the Lord, the Presence of the Lord descends, and a spirit of insanity and confusion lifts, as revelation and comfort from the Lord, comes. When Andrew sings passionately to and of the Lord, hearts are moved to surrender to the Lord's love.