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This principle of the relation between height and chroma can be observed with the aid of the helix visual representation. In the following example (Example #1), this last sequence will be played again.  This time, it is played twice, separated by a brief silence.  While it is playing, keep your eye on the helix graphic.
 
You will notice that the second tone of the sequence is almost directly above the first, as viewed on the helix. Thus, while far apart in terms of height, they are close in terms of chroma. This is more clearly exhibited in Example #2.  Here, the major seventh C4->B4 is followed by the minor second C5->B4.  That is, we start at C and jump up to B; then we start at C and jump down to B. Again, watch the helix graphic in order to observe the principle.

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