Much is said about dave listing chords to tunes, how we can't hear him, etc. I think it is alot easier in our environment if Dave just calls out the key, and calls out the chords using the Nashville numbering system. But we say we don't know the numerical representations of the chords in the different keys. I have a cool excercise that helps.
When i took Dave's guitar 1 class, in that cd there was a cool worksheet where we filled out all the notes in the scale, then we figured out what the major chords were (1,4,5) and the secondary, often minor, chords of the scale (2,3,6). Then at the bottom of the sheet, there were random progessions that we played, written in number format. You can have alot of fun with these, you would be surprised at how some people will comment "hey, i know that tune". Then you can exclaim with confidence: "That was just a 1/4/5/1 progression in the key of G. You would be surprised at how many guitar players that would not have a clue what you just said. It's great practice at committing the numerical representations to memory. Then, a "D" can't be confused with a "G" or a "C", because it would be called a 5, 1, 4. Dave stressed learning and playing these back then, now i see the importance of it. It will put you far ahead of other players as far as theory.
