Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best program for self-teaching music theory

I used this text in university music classes in the late 1970's. It is STILL the very best, most logical and systematic music theory program I have seen. However, many people don't understand what a "programed course" really is. Programed learning is a way of self-instruction - you must cover the answers and be honest with yourself. It has now evolved into many of our computer-based instruction courses, where the next screen of the computer gives you the correct answer.