We effectively have one tone (2 frets) between the first and second degrees ( C and D), between the second and third ( D and E) we have one tone, between the third and fourth ( E and F) one semitone (as we remember, there’s always one semitone between E and F), between the fourth and fifth ( F and G) there’s one tone, between the fifth and sixth ( G and A) one tone, between the sixth and seventh ( A and B) we have one tone, and between the seventh and eighth ( B and C, which is the tonic again) we have one semitone (as we already know, there’s always one semitone between B and C).
Let’s see that with an example, the C scale: Normally, intervals are written in Roman numbers, for example if we see V it refers to the fifth degree, which for instance among the C scale, is G.Ī major scale is a succession of 7 notes, one tone away from one another, except between the third and fourth degree, and between the seventh and eighth (exactly the same note as the tonic) which are separated by a semitone. The rest of the notes, called intervals or degrees are assigned by order: second, third, fourth, fifth, sixth, seventh (we could have the eight, which is the same note as the tonic, just an octave higher).
Depending on that relation, we will define the name of the scale. A scale is a set of different notes that have a certain relation together. Before we move on, let me introduce the notion of scale.
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