As it was already mentioned in the previous parts, all fingerings, viewed in this textbook, are universal for any key. Having learned the fingering of the Major seventh chord GMaj7 in the key of G Major, we don't have to learn a shape of the same chord in the A key, so as they are absolutely identical, and it is enough to play the same shape of the Major seventh chord from the A note to get the AMaj7 chord. This 'shape approach' considerably simplifies the understanding of the instrument. Two octave scales are also presented through two fingerings: ascending and descending. We get two different paths because, while playing the ascending scale, we shift a position with an index left hand finger; and while the return movement, we shift a position with the fourth left hand finger.