"So far so good, you can run through the double stops as an exercise. This is a great reference book!" Tim S. from Schenectady, NY Some of the best material out there is made by non-professionals. Chris does have a degree in music but it seems that he wanted to write down this double stop stuff, which is useful in all kinds of music. And he did the world a favor! (I wrote out one double stop chord progression in C major and was just starting on modal 'double stops'. So he saved me a ton of work.) Thanks Chris.Doug C. ~Domestic~ ~Overseas Orders~