I wrote the rather simple tune "Cooper Square" in 1963 as an exercise in learning how to cycle ii-V chords. The model for me was "Ergo," written by Jack Montrose and performed by Chet Baker. "Cooper Square" is a contrafact of that tune, with slightly different harmony, especially at the end of the bridge, where I extended the key of the last two chords, F#m7 - B7, backwards to make a I-vi-ii-V progression in E major. Where the original changes differ from mine they're shown under the staff.
The melody is mostly diatonic, sticking close to the chords. The first four measures are essentially a descending guide-tone line.