This cycle starts on the minor tonic (the I-chord) that becomes the V7 chord of the next key, a fourth above. For example, C becomes C7 and moves to F major.
In the first two times the dominant chord is without the related II-chord and in the third time with the II-chord (see the linked chord changes).
Group I - C, F, Bb and Eb major: Chord Changes, Play-Along
Group II - Ab, Db, Gb and B major: Chord Changes, Play-Along
Group III - E, A, D and G major: Chord Changes, Play-Along
This is a dominant chords cycle, first without the II-chord and then with. The dominant chord becomes the II-chord of the next key.
Group I - V7 in C, F, Bb and Eb major: Chord Changes, Play-Along
Group II - V7 in Ab, Db, Gb and B major: Chord Changes, Play-Along
Group III - V7 in E, A, D and G major: Chord Changes, Play-Along
