All the Things You Are in A♭ major

Jerome Kern and Oscar Hammerstein II, 1939 · A♭ major · 36 bars, A1 A2 B A3. A 36-bar AABA tour of keys a major third apart: A♭ then C, E♭ then G, G then E in the bridge, and home to A♭ with a minor iv and a chromatic walk down in a stretched last A.