The main idea is to include the harmony in the structure of the melodu improvisation.
And in order to do so, we create melodies that
1) Have harmonic moves (corresponds to harmonic cycles of chords)
2) Melodic waves (corresponds to chord arpeggios)
3) Chromatic ripples (corresponds to chromatic embellishments or chromatic arpeggios)
Examples of melodies with quite clear such structure are
1) The improvisational melodies of overtone flutes
2) The Dan Bau (or duxianqin ) improvisation melodies
3) The trombone improvisation melodies
4) Mongolian Morin Khuur cello, improvisation melodies
5) Chinese vilin Erhu, improvisation melodies
