Let's take just a moment to meditate on the Old Testament where we really see what God thinks of disobedience to His commands. Well, one day the ark was on a cart driven by two men. The oxen stumbled and the ark shook, and one of the drivers, a man named Uzzah, put his hand on the ark to steady it. God had warned him not to touch it and as a result of his disobedience, the man was killed on the spot. People need to stop kidding themselves about the impact of sin and willful disobedience.
Many people read their Bibles but refuse to do what it says like our musician friend.
In conclusion, there is no way I'd take my kids to hear somebody that said that in their music and personal life they're not trying to be holy and good.