I think that one can make a distinction and say, "This is music is good. This music is bad."
Think of the human voice. A person can say the same words in all manner of different tones. You or I or anyone else can infer what that person is meaning based not upon the words, but upon the way in which it is said.
Music is very similar. A person's voice, by dictionary definition, is a musical instrument. The words that he speaks, as well as the manner in which he presents it, come from his heart. Some could be good, some could be bad. It is usually easy to discern which. Would you say that heavy metal music is one of those pure, good, and noble things that we are to think upon?
I think of music like words. Some comes from a pure heart regenerated by the Holy Spirit. Some do not. A lot of the "Christian" artists today are living immoral lives, and what comes from them is sensual and meant to appeal not to our spirits but to our carnal nature They are written not for the glory of God but for money and fame.
I think that a person can hear a melody and say whether it is pleasing or not. Obviously, we can tell the difference between a vacumn cleaner and a violin. One produces noise the other produces beautiful music. What about an electric guitar? Well, it produces both. lol.. Depending on who plays it, as I'd say is the case with most instruments.
Jesus rescued us from this present evil age. That's huge! It means a lot! We've been translated from the kingdom of darkness to the kingdom of light. It's a whole different culture. I John 2 defines what the world is. Isn't it interesting? The lust of the eyes, the lust of the flesh, the boastful pride of life....all these things are what comes natural to us. Jesus said that the flesh profits nothing but the spirit gives life. I'd say that worldly music, then, is that which excites and fullfills the lust of the flesh rather than that which pleases the spirit of Christ. Am I wrong? Further I'd say that worldy music is any music that "goes with the flow" of the prevailing music of the world. Hence the term "wordly music"--i.e. it sounds just like the music of the world. The redeemed sing a different song, I would dare to argue. Things are totally different for us now then they were before we got saved, which was the way of the world, as it says in Eph 2.
The worshipers that the Father seeks are those that worship him in spirit and in truth. I may be wrong, but the way I see this it, "in spirit and in truth" seems to be saying that it's not "in the flesh and in vain repetition". I see worshiping God in spirit and in truth as being a simple song that meditates on the truth of the scripture sung with all our heart in praise towards God, not a contemporary song that is modeled after the prevailing songs of the world that gets my emotions stirred up and just says the same thing over and over again - a message that isn't in the Bible, and may even be in error - a message that comes not from the spirit of God but from the darkness of man's heart.
I do not believe that all contemporary songs are bad. Like I said, I really like Kieth Green's songs, but that is because I read his biography and know that he really did have a heart that loved God. And I think you can tell in his songs. They are not crude or crass (a couple some may consider to be borderline). In each one the message is clear and well-thought out. You can actually hear each word that he is saying, and it is praiseworthy.
I think that we can say, "This music is good and I'll keep it and learn it. This music is bad and I don't want to sing it." We keep the good and discard the bad. There are a few good contemporary songs out there.
But as far as big bands during a worship time with other believers--it is not needed, it is distracting and it is an unnecessary complexity, imho
I probably wouldn't mind an acoustic guitar, but by far I prefer the simplicty of the instrument that God gave us, not made with hands, and that is the human voice--reverberating the notes of praise from that which was also not made from human hands - the heart.
Arthur