You are a personal shopper, and a client comes to you asking for some more “oomph” in his business clothing. You select neckties and pocket squares in vibrant colors. Which aspect of design are you using here?

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.