The part-writing part of section II requires that the student—using knowledge of "eighteenth century composition guidelines" (as indicated on CollegeBoard's latest rubric and on the released 2003-2006 exams on AP Central), standard circle-of-fifths chord progressions, cadences, voicing, and part ranges—write a short two-part or four-part texture given starting pitch, key, time signature, and more information that varies with each question.
The composition part of section II expects the student to create a brief two-part or four-part texture using "eighteenth century writing rules" (as detailed in CollegeBoard's most recent rubric and in the released 2003-2006 exams on AP Central), standard chord progressions, cadences, voicings, and range specifications. The details provided for each question may vary.