All music is based on the proven scientific fact that the notes we use to create music have fixed rates of vibration which are mathematically related to one another. Each note has a pitch which we can produce vocally or with a muscial instrument. These notes, when played in fixed patterns, are called scales.
When we have two notes of the same name,, but one of different pitch, one written higher than the other and vice versa, they are said to be an octave apart. It is important to realize that an octave does not consist of 13 chord tones, but is the 13th note above the fret of a series of 12 consecutive notes. We will first look at the Chromatic scale:
The interval sequence of notes upon which all scales are built is called a Chromatic Scale. It is one octave divided into 12 tones, called half steps.
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