What is the fine-grained topic of the following text: I anticipate the shift to the four chord by sliding the initial dominant seventh shape up chromatically (one fret at a time) till I reach D7 at the start of bar 9, where the A idea is transposed up a fourth to D. An abridged version of the riff is then configured to take us through the remainder of the progression. Only return the topic.
Guitar playing technique in music progression