The Devil's music? Yeah right

I mentioned in my previous post how some people seem to think that music such as Rock and Metal are satanic. Yeah right.
I would like to point you to a chapter of C.S. Lewis' timeless story "The Magician's Nephew" (Chapter 9: The Founding of Narnia). In this chapter, Aslan appears and creates Narnia out of complete and utter darkness using music. This shows the power of music.
Now, I am not saying that music has the ability to create whatever you want. But I do believe it has tremendous power. In Luke 2, the angel appears to the shepherds and tells them the good news. Suddenly a heavenly host appears. The passage says the following:

 ¹³Suddenly a great company of the heavenly host appeared with the angel, praising God and saying,
 ¹⁴"Glory to God in the highest,
      and on earth peace to men on whom his favor rests." 

 Now it does say "saying." But I believe that the heavenly hosts sang when they praised God.

Psalm 150 is a good example. The psalmist devotes half of the psalm to telling us to praise God with music. So music must be incredibly important to God. If that is so, how in the world can any music be satanic? 

I don't particularly like metal. But I definitely don't believe it is satanic in and of itself. Many bands do make music that is lyrics that are definitely not of God. But I do know of metal bands who play christian music. Rock and Metal are music, and as such are not of the devil unless man makes them that way.