Rhythm Changes
Mix-and-Match Variations
'A' Section Variations m. 1-4
|| Bb G- | C- F7 | Bb G- | C- F7 |
I vi ii V I vi ii V
|| Bb G7 | C- F7 | D- G7 | C- F7 |
I VI ii V iii VI ii V
|| Bb Bo7 | C- C#o7 | D- G7 | C- F7 |
I #io ii #iio iii VI ii V
"C.T.A."
|| Bb Ab7 | Gb7 F7 | Bb Ab7 | Gb7 F7 |
Any turnaround may be used in m. 1-2, 3-4
(see Turnarounds)
Cycle Substitution
|| F#7 B7 | E7 A7 | D7 G7 | D7 F7 | Bb
See also Cycles
'A' Section Variations m. 5-8 (1st A)
m. 5
| Bb Bb7 |
I V/IV
| Bb7 |
I7 (V/IV)
| F- Bb7 |
ii/IV V/IV
m. 6 | Eb7 Ab7 |
IV bVII
| Eb7 Eb- |
IV iv
| Eb7 Eo7 |
IV #ivo
m. 7-8 | D- G7 | C- F7 ||
use any turnaround variation
'A' Section 2nd endings (m. 15-16, 31, 32)
| Bb | Bb ||
| C- F7 | Bb ||
|D- G7 C- F7 | Bb ||
|D7 G7 C7 F7 | Bb ||
Bridge Variations
Cycle of Dominants
|| D7 | D7 | G7 | G7 |
| C7 | C7 | F7 | F7 ||
Each chord in the cycle of dominants can be altered in various ways: sus, 7+5, 7+11, 7b9, 7+9
long ii Vs
|| A– | D7 | D– | G7 |
| G– | C7 | C– | F7 ||
Quasi ii V I
|| A– | D7 | G7 | G7 |
| G– | C7 | F7 | F7 ||
Tritone substitution every two bars
|| D7 | D7 | Db7 | Db7 |
| C7 | C7 | B7 | B7 ||
Tritone Bridge (Tt sub for each ii V)
||A- D7|Eb- Ab7|D- G7|Ab- Db7|
|G- C7|C#- F#7|C- F7| F#- B7||
Tritone sub every other measure
|| D7 | Ab7 | G7 | Db7 |
| C7 | F#7 | F7 | B7 ||
Sideslip
||D7 Eb7 | D7 |G7 Ab7 | G7 |
|C7 Db7 | C7 |F7 F#7| F7 ||
Several "Rhythm" tunes use alternate bridges, such as "Serpent's Tooth," "Eternal Triangle," "Room 608," "Good Bait," etc.
'A' Section Variations m. 1-4
|| Bb G- | C- F7 | Bb G- | C- F7 |
I vi ii V I vi ii V
|| Bb G7 | C- F7 | D- G7 | C- F7 |
I VI ii V iii VI ii V
|| Bb Bo7 | C- C#o7 | D- G7 | C- F7 |
I #io ii #iio iii VI ii V
"C.T.A."
|| Bb Ab7 | Gb7 F7 | Bb Ab7 | Gb7 F7 |
Any turnaround may be used in m. 1-2, 3-4
(see Turnarounds)
Cycle Substitution
|| F#7 B7 | E7 A7 | D7 G7 | D7 F7 | Bb
See also Cycles
'A' Section Variations m. 5-8 (1st A)
m. 5
| Bb Bb7 |
I V/IV
| Bb7 |
I7 (V/IV)
| F- Bb7 |
ii/IV V/IV
m. 6 | Eb7 Ab7 |
IV bVII
| Eb7 Eb- |
IV iv
| Eb7 Eo7 |
IV #ivo
m. 7-8 | D- G7 | C- F7 ||
use any turnaround variation
'A' Section 2nd endings (m. 15-16, 31, 32)
| Bb | Bb ||
| C- F7 | Bb ||
|D- G7 C- F7 | Bb ||
|D7 G7 C7 F7 | Bb ||
Bridge Variations
Cycle of Dominants
|| D7 | D7 | G7 | G7 |
| C7 | C7 | F7 | F7 ||
Each chord in the cycle of dominants can be altered in various ways: sus, 7+5, 7+11, 7b9, 7+9
long ii Vs
|| A– | D7 | D– | G7 |
| G– | C7 | C– | F7 ||
Quasi ii V I
|| A– | D7 | G7 | G7 |
| G– | C7 | F7 | F7 ||
Tritone substitution every two bars
|| D7 | D7 | Db7 | Db7 |
| C7 | C7 | B7 | B7 ||
Tritone Bridge (Tt sub for each ii V)
||A- D7|Eb- Ab7|D- G7|Ab- Db7|
|G- C7|C#- F#7|C- F7| F#- B7||
Tritone sub every other measure
|| D7 | Ab7 | G7 | Db7 |
| C7 | F#7 | F7 | B7 ||
Sideslip
||D7 Eb7 | D7 |G7 Ab7 | G7 |
|C7 Db7 | C7 |F7 F#7| F7 ||
Several "Rhythm" tunes use alternate bridges, such as "Serpent's Tooth," "Eternal Triangle," "Room 608," "Good Bait," etc.