While not specifically speaking of music, Php 4:8 is an excellent guide for musical lyrics:

“Whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.”

If we should be thinking about such things, surely those are the things we should invite into our minds through music and lyrics.

Can the lyrics in a secular song be true, noble, right, pure, lovely, admirable, excellent, and praiseworthy?

While not specifically speaking of music, Php 4:8 is an excellent guide for musical lyrics:

“Whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.”

It's the content of the lyrics that are to be brought into question. Since neither the purpose of music nor the style of music determines whether a Christian should listen to secular music, the content of the lyrics must be considered.

To be clear the Bible nowhere condemns any particular style of music. The Bible nowhere declares any particular musical instrument to be ungodly.

Or who stretched a measuring line across it? On what were its foundations set, or who laid its cornerstone, while the morning stars sang together and all the sons of God shouted for joy?”
—
‭‭Job‬ ‭38‬:‭4‬-‭7‬

If you are struggling with this teaching:

"Where were you when I laid the foundations of the earth? Tell Me, if you have understanding. Who fixed its measurements? Surely you know!

It all goes back to God and no wonder why, for from Him and through Him and to Him are all things. To Him be the glory forever! Amen (Romans‬ ‭11‬:‭36‬).

If music is not explicitly praising God, its gone past God's intended purposes and leads to idol worship.

So the other allowed uses of music from the bible is for warning of God's presence, alerting of God's presence or repelling unwanted spirits by the presence of God.

The Israelites also used musical instruments to warn of danger for God's protection (Nehemiah 4:20) and to surprise their enemies that the lord our God is with them (Judges 7:16-22).

When King Saul was tormented by evil spirits, he would call on David to play the harp in order to soothe him (1 Samuel 16:14-23).

If you glorify anything else before God, that is your idol. All throughout the bible the primary use of music is to worship God. We see this through King David who wrote the Psalms, however the bible definitely allows for other uses of music.

Let's go deeper, all music glorifies something:
- Your ambitions
- Your emotions
- Your culture
- Your work ethic
- Your job
- Your story
- Other people
- Other gods
- Or the one true God

Strikingly similar to "The Great Commission"

"Sing to the Lord a new song; sing to the Lord, all the earth. Sing to the Lord, bless His name; proclaim His salvation day after day. Declare His glory among the nations"—Psalms 96:1-3