It was a really good article up and until it explained the octave, the perfect fifth, and the equal tempered scale. It didn’t do a full explanation of equal te

It was a really good article up and until it explained the octave, the perfect fifth, and the equal tempered scale. It didn’t do a full explanation of equal temperament—we use it because, with it, it’s easy to change keys. Once it jumps from the chromatic scale to the diatonic scale, it doesn’t explain the theoretical basis for the major scale. To understand the major scale, we need to first explain the major third then the major chord. From the major chord, perfect fourth, and perfect fifth, we can build up the major scale. There’s also no discussion of time signature and rhythm.