In First Corinthians, Paul emphasized that the Corinthians must not be idolaters by playing idolatrously as the Israelites did in the Golden Calf Incident (1 Cor. 10:7), which including their producing demonically influenced music on that occasion (1 Cor. 10:18-20 applied to Exod. 32:17-18). In addition, the Pauline emphasis in this passage included a command to flee idolatry (1 Cor. 10:14).
Moreover, we find this emphasis reiterated in Second Corinthians when he again instructed them that they must not have anything in common with the unrighteousness and darkness of idolatrous unbelievers:
A Reiterated Pauline Emphasis
2 Corinthians 6:14 Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?
15 And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?
16 And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.
17 Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you.
18 And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty.
Because Paul reiterated this vital emphasis, we must heed what he emphasized to the Corinthians by properly applying it to our music!
Application to Our Music
Like the Corinthians, we must reject all the unclean things (2 Cor. 6:17) that reprobate idolaters as inventors of evil things (Rom. 1:30) have made, including musical forms sourced in demonic influence upon them in their idolatrous worship (Exod. 32:17-18; cf. 1 Cor. 10:7). We must not have any fellowship with such unfruitful works of darkness (Eph. 5:11).