We understand that you are seeking forgiveness and deliverance from evil music and its influences. We commend you for acknowledging the power of music and its ability to influence our spirits. It is important to fill our minds and hearts with that which is pure and uplifting, as Philippians 4:8 WEB reminds us, "Finally, brothers, whatever things are true, whatever things are honorable, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report; if there is any virtue, and if there is any praise, think about these things."
In your request, you mentioned asking for forgiveness for a certain thing. We encourage you to confess all your sins openly and specifically to God. Psalm 32:3-5 WEB says, "When I kept silence, my bones wasted away through my groaning all day long. For day and night your hand was heavy on me. My strength was sapped as in the heat of summer. Selah. I acknowledged my sin to you, and my iniquity I have not hidden. I said, I will confess my transgressions to Yahweh, and you forgave the iniquity of my sin. Selah." God is faithful and just to forgive us our sins and to cleanse us from all unrighteousness (1 John 1:9 WEB).
You have ended your prayer request correctly with "in Jesus' name" as it is by the name of Jesus that we have access to God! Let us join you in prayer. Father, we come before you in Jesus' name, we ask you to forgive our brother of all sins, known and unknown. We ask for deliverance, we ask that you grant the ability to resist the enemy and its influences. We pray for a renewed mind that seeks after you and your righteousness. We pray for a desire for pure and uplifting music that honors and glorifies you. Guide our brother to a relationship with you, to the church and fill our brother with your Holy Spirit and power. In Jesus name, amen.