Most of these pitches are a whole step above the previous one, but there is only a half step between the B and C, and between the E and F.īut sometimes, we want to move around where this half step occurs. However, these 7 notes are not equally distributed throughout the octave. The scale was originally conceived of as a 7 note scale, with the notes A, B, C, D, E, F, G.
Simply because, acoustically speaking, there is no room in our current system for another pitch between B and C, or E and F. Why do B and C and E and F not have a sharp note between them?
Other systems exist, of course, but would probably only confuse the matter. Note: For the sake of discussion, I'm limiting myself here to equal temperaments, which is the most common way of tuning keyboards.
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