After the blues, the most-blown form in jazz: the 32-bar AABA of Gershwin's “I Got Rhythm.” Each A is a fast I–VI7–ii–V7 turnaround that leans on I7→IV in its middle; the B (the bridge) is a circle-of-fifths chain of four dominants — III7–VI7–II7–V7, each the V7 of the next — that coils the tension and drops you back on I. Countless heads ride these changes (“Oleo,” “Anthropology,” “Cotton Tail,” half the bebop book).
The A sections stay home; the bridge travels. Listen for the four dominants of the bridge pulling around the circle of fifths back to the top.