Thou hast been in Eden the garden of God; every precious stone was thy covering, the sardius, topaz, and the diamond, the beryl, the onyx, and the jasper, the sapphire, the emerald, and the carbuncle, and gold: the workmanship of thy tabrets and of thy pipes was prepared in thee in the day that thou wast created. (Ezekiel 28.13 KJV)
I have seen this verse used to "prove" that satan was heaven's choir director. I have seen very little Scripture in support of this, it is taught as is evolution- as theory masquerading as fact. No where in the Bible does it say that satan was the choir director- or that heaven even has a choir director!
All this is for those who disapprove of a particular musical style to have some was to rationalize demonizing the music. This may seem like a defense of Christian Rock, but it is not. It is not meant as a defense to any music. It is meant as a desire for truth. Some music may be inappropriate, but do not twist Scripture to make the point.
I still cannot tell at what point music itself becomes "evil." Is it when we play 3/4 time? 4/4? When there's no organ? If there is a guitar? Drums? A minor chord? Effects like chorus, distortion, wah or delay? Use of a non-acoustic instrument? Cymbals?
For me, the words and lifestyle of the band mean a lot. I do not listen to much "contemporary Christian" music because it is very shallow and the lifestyles are less than worldly (e.g.- Amy Grant shacks up with Vince Gill and is still considered a Christian artist- what a joke!!). Some Gospel musicians are filled with pride (I have seen it close up) and some Christian "rockers" are as filled with the world as any "secular" artist ever was. A band that is tabbed as "Christian" (such as Switchfoot) and does not mention Jesus once- not even in the "thank yous" (such as Switchfoot) are worthless. If they do personally claim to be Christians they are lame.
To sum this up, satan was no choir director and if we have a conviction against any style of music (like rock, rap, hymns, choruses, etc) we should not isogete (read into the text) Scripture to prove our point. We should stick to God's Word and conform to it as the Holy Spirit transforms us, not try to transform it to fit our point. Sola Scriptura.