To me, God is the basic Reality of the universe. God is what is. That's how Moses wrote that God introduced Himself, isn't it? "I am that I am." God is. Whatever is, that is God.
To me music is music. A person of faith, a person that calls themselves a Christian, they are the Christian and they make music. Some music has more to do about God than other music, but in reality what makes the difference between "secular" and "Christian" music is simply a marketing channel.
The whole idea of worship being associated with music, it gives you an impotence to make art that is true, that is honest and that opens the human heart to God and to reality.