This is the module where the chords start moving. Until now you've soloed over a single vamp; here you learn chord-tone soloing — landing on the right note as each chord arrives so your lines sound like they're playing the song, not running a scale. You'll build triads and learn to read their shapes and inversions across the neck, memorize every B note, and add horizontal, one-string movement to the vertical and diagonal motion you already have. The payoff comes at the end: overlaying chord targets on the rectangle and stack to improvise over the "Stairway to Heaven" solo section, building phrases that connect one chord to the next.