If your son or daughter thought church was boring because all the organist ever played was the same hymns and carols written in the 17th, 18th, & 19th centuries, would you be opposed to them going to a service where the music seemed familiar, but the message was bedrock salvation through the blood of Christ?
If one person finds Christ because of "amplified wordly music" then I say "Rock On!"
I don't think he'd be impressed with obnoxious, crappy, patronizing, shallow, irrevent music performed by rock wannabees.
Btw, it is the Holy Spirit using the Word of God which draws an unbeliever to the Lord -- not some half-talent with a guitar.