This is the instructors edition, but nothing much about it is different than the student edition save the explanations of how the online resources work at the beginning of the book. Excellent volume for the contemporary musician wanting to learn music theory. It combines influences and examples from the popular music world, jazz music, and classical music. There are workbook examples throughout. This is being used as a textbook in some music schools. Almost like new. There is a slight crease on the cop corner of the front cover. No annotations.