The church should only practice in the worship service what is documented in the scriptures, and that consists of only four things; acapella singing (making melody in your heart), praying, preaching, and the contribution collection.
I agree and disagree with you at the same time.
If you look at Nehemiah Chapter 9, you get a picture of this massive gathering of the Israelites standing together in repentance. It must have been an amazing sight to see everyone standing together confessing the sins of their forefathers. And I would agree, there were no musical instruments involved. It was very solemn, indeed.
But when the wall was built, Nehemiah, with the help of the Levitical priests, gathered them all together again in chapter 12. Here is the quote from scripture:
At the dedication of the wall of Jerusalem, The Levites were sought out from where they lived and were brought to Jerusalem to celebrate joyfully the dedication with songs of thanksgiving and with the music of cymbals, harps, and lyres.
Neh 12: 27
In defense of your statement, Nehemiah went on to say that he had the choirs take their place in the house of God. I'm not really sure what that means, but it sounds like he wanted to go back to more solemn worship.
My take on all this is that when we repent, there is no rejoicing in it. It is a confession, deep sorrow for what we've done, and a turning away.
But when we realize that he forgives us through Christ our Lord, I believe lavish praise and thanksgiving to God is warranted with whatever means we have, including guitars and drums and even perhaps a lighted stage.
I agree that some of this "rejoicing" can become somewhat irreverent if we let it get out of hand. I often object when I see some of these big concert settings put on by world-famous churches. They have people jumping, spinning around, and seemingly making a mockery of worship.
But I think I would rather have these young people doing that in the name of Jesus rather than attending rap concerts glorifying the defilement of women. Wouldn't you?
I would rather have a bit of irreverent worship in the name of Jesus than a whole bunch of reverent worship to the enemy. Hopefully, one day, the youth of our world will understand that solemn repentance has its place in worship, too.