Module 4 taught you to overlay chord targets on one pentatonic scale; this module hands you the complementary approach — a different scale for every chord. You'll see how the major scale gives rise to its diatonic chords, how the major and minor pentatonic scales nest inside it, and why that means you can follow a progression just by sliding a rectangle or stack up or down a string set. After memorizing the G notes, you'll drill those gear-shifts over a I–V–vi–IV in D and then improvise over a slow backing track — landing the right scale on each chord without having to name a single root.