Music is powerful enough to make Cover Art obsolete, the same way Cover Art is powerful enough to make the Music obsolete. Though true power lies in the resonance between the two, resulting in an immaculate sonic and visual experience. Music and Art are just light and sound waves, yet possess the true power of emotionally changing a person's view of the world. Creativity will always make someone feel something, regardless the tools you used or the time you invested. When you have an Idea, flesh it out to the extend you wish and don't let yourself be limited to or intimidated by what already exists.