Putting rules up against the natural order of things, will always be a contentious issue. Music theory is no different.

     Classic music theory, as taught today in schools in the western world, is based on relative pitch, and harmony rules and devices from Mozart, who's precise and accurate music follows a number of precise and careful laws. And also it relies heavily on music notation based on five line staves.

     Using traditional music notation is not strictly important to most modern Jazz, Rock or Pop musicians because they are always improvising, and often need only the chords. Most of these musicians frequently do everything from memory. Some use written notes, or tablatures.

     I am going to present the reader with a few musical rules and tricks, which classically trained musicians are aware of, but self taught musicians usually are not. This information is best treated as reference, but most of it makes complete sense.