A closer look:
World - the system and society that is opposed to God.
Conform - to fashion alike.
Transform - to change, metamorphosis.
As Christians we need to remember that the world system isn't going to make it easier to serve the Lord Jesus Christ. Here is a direct command not to follow the way of the world. The world with all its music, dress, mores, and values is truly sub-Christian. We shouldn't be looking at how the world does things, and then pattern our worship and service towards God in similar fashion (this would also include music, dress, and many other pertinent things that God delineates in His Word). The struggle is between the world vs. the Word. The world maybe flashy, but it's poison will rotten the soul. The Word doesn't seek to be flashy (although it is true light), and yet it is life-giving and renewing. The world seeks to conform us, but the Word seeks to transform us. Will you conform, or be transformed?