We know from 2 Tim. 3:15-17 that God wants Christians to profit from everything that He has inspired in the Bible. How does God want Christians to profit concerning their understanding of proper worship, especially of proper worship music, from the mention of singing and dancing in the following key passage about idolatrous worship:
Exodus 32:17 And when Joshua heard the noise of the people as they shouted, he said unto Moses, There is a noise of war in the camp. 18 And he said, It is not the voice of them that shout for mastery, neither is it the voice of them that cry for being overcome: but the noise of them that sing do I hear. 19 And it came to pass, as soon as he came nigh unto the camp, that he saw the calf, and the dancing: and Moses' anger waxed hot, and he cast the tables out of his hands, and brake them beneath the mount. 20 And he took the calf which they had made, and burnt it in the fire, and ground it to powder, and strawed it upon the water, and made the children of Israel drink of it.