The Coltrane substitution, Coltrane changes, or "'Countdown' formula" is as follows. Given the ii-V-I turnaround lasting four measures:
ii7 | V7 | I | I || dm7 | G7 | C | C ||with the dominant chord (V7) preceding the tonic (I).
One substitutes two chords for each of the first three:
ii7 | | V7 | I || dm7 Eb7 | Ab B7 | E G7 | C || m2 P4 m3 P4 m3 P4Notice a dominant seventh chord preceding and thus tonicizing a major chord on C and also E and Ab, both a major third from C.
(V7 | I)(V7 | I)(V7 | I) Eb7 | Ab B7 | E G7 | CThis also may begin on C, as on "Giant Steps", giving:
C Eb7 | Ab B7 | E G7 | C || m3 P4 m3 P4 m3 P4Read more about this topic: Coltrane Changes
Famous quotes containing the word substitution:
“Virtue is the adherence in action to the nature of things, and the nature of things makes it prevalent. It consists in a perpetual substitution of being for seeming, and with sublime propriety God is described as saying, I A—.”
—Ralph Waldo Emerson (1803–1882)