use the diminshed scale from the I to the IV just like Robben does. Let's take the key of G - so G7 going to C7. You would play G H/W dimished resolving to the C7 chord. What you are ...
I would seriously recommend to any player of just about any level to work through the tunes contained on the VHS/DVD "Blues And Beyond". There is so much info packed in this - composition, chord voici ...
Since I still had time on my hands even after joining the gambale, holdsworth and henderson forums, I figured joining this one just might eat up that little bit of "free" time I have left ...