Yes, the A section in rhythm changes is based around I VI ii V. The bridge is
| D7 / / / | D7 / / / | G7 / / / | G7 / / / |
| C7 / / / / | C7 / / / | F7 / / / | F7 / / / |
The F7 is diatonic in Bb, and the preceding chords are only to get there. The progression moves exclusively in 4ths, and starts on D7, which means it ends up on F7. C7 is V7/V7 which means it's the dominant 7th of the V7 in this key. So extending that we have G7, which is the V7/V7/V7 and D7 which is V7/V7/V7/V7. I hope you see what I mean. We have gone away from F7 by 4ths to end up back there.
It's a similar idea in Hey Joe, where A is diatonic, and the other chords get to A, this time by 5ths.
Statistics: Posted by merlyn — Tue Jan 16, 2024 10:41 am