Well, let me direct your attention to Psalm 96.6-9:
Splendor and majesty are before him;As we read in Psalm 96.6-9, we find that the worship that the church is commanded to offer God ("ascribe" is a command), is to be reflective of the splendor, majesty and glory that is due to God because he is a God of splendor, majesty and glory. Our worship is to be biblical. The words can be scriptural (psalmody) or interpretations of scripture (hymnody), but they should never be unbiblical or false interpretations of scripture. But beyond that, biblical worship is concerned with more than just the words, but also the mode by which those words are sung. This means that sound words can be sung and offered to God in an unbiblical way--esepcially, if the worship offered does not reflect his splendor, majesty and glory.
strength and beauty are in his sanctuary.
Ascribe to the Lord, O families of the peoples,
ascribe to the Lord glory and strength!
Ascribe to the Lord the glory due his name;
bring an offering, and come into his courts!
Worship the Lord in the splendor of holiness;
o tremble before him, all the earth!
Paul Jones comments that there is a problem today with the influence of the music of pop culture in the Church. The result is that it is leading the Church to become dominated by the spirit of the age rather than the spirit of Christ. The way I would put it is that it is leading the church to offer up worship that has biblical content in a worldly wrapper. The result is that the worldly wrapper colors the biblical content so that the worship is no longer biblical. In other words, as Marshall McLuhan, Neil Postman, et. al., have taught, you cannot separate the message from the medium. One of the problems with trying to breathe new life into the old hymns with modern tunes and arrangements is that it tends to borrow from the world in order to engage in an other worldly activity. The end result is that old hymns with new tunes often end up being no better than jettisoning the old hymns to begin with, for the mode changes the meaning, which means the hymns get jettisoned anyway.
Let me offer up an example. Below you will find two video presentations of the song "Arise, My Soul, Arise," which was originally penned by Charles Wesley in the 18th century. Both are using the same basic lyrics, though the second does add its own chorus. The lyrics are:
Arise, my soul, arise,Listen to both and see which one you think better reflects the splendor, majesty, and glory of God as commanded in Psalm 96. Which seems more fitting to be sung to and before the face of a heavenly, divine, Lord?
Shake off thy guilty fears:
The bleeding Sacrifice
In my behalf appears:
Before the Throne my Surety stands,
My name is written on his hands.
He ever lives above,
For me to intercede,
His all-redeeming love,
His precious blood to plead;
His blood atoned for ev'ry race,
And sprinkles now the throne of grace.
Five bleeding wounds he bears,
Received on Calvary;
They pour effectual prayers,
They strongly plead for me;
Forgive him, O forgive, they cry,
Nor let that ransomed sinner die!
My God is reconciled;
His pard'ning voice I hear;
He owns me for his child,
I can no longer fear;
With confidence I now draw nigh,
And "Father, Abba, Father!" cry.