Furious with rage, Nebuchadnezzar summoned Shadrach, Meshach, and Abednego. So these men were brought before the king, and Nebuchadnezzar said to them, 'Is it true, Shadrach, Meshach, and Abednego, that you do not serve my gods or worship the image of gold I have set up? Now when you hear the sound of the horn, flute, zither, lyre, harp, pipes and all kinds of music, if you are ready to fall down and worship the image I made, very good. But if you do not worship it, you will be thrown immediately into a blazing furnace. Then what god will be able to rescue you from my hand?'
The king summoned the guys and, because he liked them, he gave them another chance to bow down and commit idolatry. Satan does not change his tactics and so he is using this music to call the people to idolatry. That does not mean that all music instruments are bad and should not be in the church as some would say and practice.