This is part two to a great Coltrane dissertation that was submitted by The-End.

The Expansion of "Coltrane Change"

For compositional and improvisational purposes, the author of this article has developed 
a system to expand the possibilities of "Coltrane Change" by altering the quality of tonic 
chords (Example 9), altering the dominant chords (Example 10), and altering the symmetrical
root movements between tonic chords (Example 11). There are endless combinations and 
possibilities by using this system, thus only main alternations are listed
	

	
Example 9. Altering the quality of tonic chords.
Original:
CMaj7 Eb7 | AbMaj7 B7 | EMaj7 G7 | CMaj7

Variation 1:
Cm Eb7 | Abm B7 | Em G7 | Cm

Variation 2:
Cdim Eb7 | Abdim B7 | Edim G7 | Cdim

Variation 3:
Caug Eb7 | Abaug B7 | Eaug G7 | Caug

Variation 4:
C7 Eb7 | Ab7 B7 | E7 G7 | C7

Example 10. Altering the dominant chords.
Original:
CMaj7 Eb7 | AbMaj7 B7 | EMaj7 G7 | CMaj7

Variation 1:
CMaj7 A7 | AbMaj7 F7 | EMaj7 Db7 | CMaj7

Variation 2:
CMaj7 G7 | AbMaj7 D#7 | EMaj7 B7 | CMaj7

Example 11. Altering symmetrical root movements between tonic chords.

Original:
CMaj7 Eb7 | AbMaj7 B7 | EMaj7 G7 | CMaj7

variation 1:
CMaj7 C#7 | F#Maj7 G7 | CMaj7 | CMaj7

Variation 2:
CMaj7 E7 | AMaj7 C#7 | F#Maj7 Bb7 |EbMaj7 G7 | CMaj7

Variation 3:
CMaj7 F7 | BbMaj7 Eb7 | AbMaj7 C#7 | F#Maj7 B7 | EMaj7 A7 | DMaj7 G7 | CMaj7

By using this system to freely alter "Coltrane Change," desired sounds and chord 
progressions can be created (Example 12). Doubling or even tripling the cycles, expanding 
the duration of chords, reducing the duration of chords, and freely altering chord quality 
if necessary (Example 13).

Example 12. Freely altering "Coltrane Change."
a.
Caug F7 | F#aug B7 | Caug | Caug

b.
Cdim Bb7 | Adim G7 | F#dim E7 | Ebdim Db7 | Cdim

c.
C7 F7b9 | Bb7 Eb7b9 | Ab7 C#7b9 | F#7 B7b9 | E7 A7b9 | D7 G7b9 | C7

Example 13. Using this system to create harmonic structure for new composition.
Dbaug | F7b9 | F#Maj7 | B7
Cm7 | F7b9 B7 | BbMaj7
Ebaug | G7b9 | G#Maj7 | C#7
Dm7 | G7b9 C#7 | CMaj7 | AbMaj7 EMaj7
Cm7 Bb7+ | Aaug G7+ | F#aug E7+ | Ebaug Db7+
F#m7 A7+ | Daug F7+ | Bbaug C#7+ | F#Maj7 CMaj7
Dbaug | F7b9 | F#Maj7 | B7
Cm7 | F7b9 B7 | BbMaj7

Conclusion

John Coltrane's influence on jazz music was considered second only to Charlie Parker. He 
affected his contemporaries with his unique harmony structure, melodic sense, rhythmic 
complexity, spiritual perfection and modal approach to improvisation. His music "-like that 
of Jimi Hendrix - ran parallel with a tide of mass political creation of such innovative and
intense music. Nevertheless, Coltrane's music reached a wide audience, and was particularly
popular with the younger generation of listeners who were also big fans of rock music." The 
harmonic structure used in Giant Steps has been considered as one of the major components 
that have made today's modern jazz so exciting. Further studying regarding his music 
language used in Giant Steps should be studied thoroughly in order to gain deeper 
understanding in modern jazz music.