Identify the key for each of the following exercises. Add inner voices and a roman numeral analysis. On the first line(s) below each exercise, name the cadence or cadences. On the lines that follow, identify the features of the chord progression that differ from the normal circle of fifths progression. These features include truncated progressions, chord substitutions, retrogressions, unusual chord qualities, and so on. The correct number of lines are provided for each exercise.

1. (cadence) imperfect authentic cadence
2. augmented mediant triad used in place of major mediant
3. iv chord substituted for ii
4. Picardy third