When you start on g and follow the formula above it looks like this: If you didn’t get back there, something would have been wrong, because as you can see from the keyboard diagram, the same notes repeat over and over. Half: b to c – Note that you’re back where you started at c. That’s the first “whole” and let’s follow the whole formula through: This means if we start on c, we must go up 2 adjacent notes to get to the next note, which is d. The formula for creating a major scale is “whole, whole, half, whole, whole, whole, half.” Use the following diagram to help you see that the distance between d and d# is a half-step and the distance between eb (the same note as d#) and f is a whole-step. A whole step = 2 half-steps, and a half step is simply the distance between 2 adjacent notes. The major scale is constructed using whole and half-steps.
Therefore it’s essential that you understand how to construct a major scale as your first step in understanding music theory. Everything, even other scales that have nothing to do with the major scale, gets named in relationship to it. All music theory begins with the “1, 2, 3” or “do, re, mi” of a major scale.
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