Listening to some music certainly has the potential to pull you away from Christ. The danger is that the effects aren't likely to be noticeable right away. Like screams said, you should respect your dad's authority. He's only trying to do what he believes is best for you. Obviously any music created by a non-Christian is not infected with a poison that will somehow blacken your heart with every note. Yet many people may be more sensitive to certain negative messages than they believe. It's always wise to listen critically and be careful what you allow.