In this level we cover the tresillo rhythm, fast power chord changes, AC/DC-style dynamic rhythm, the blues scale, the Hendrix pentatonic roadmap, playing in F♯, and Drop D tuning.
Level 5 takes you beyond the pentatonic for good — full major and minor scales, intervals, intonation, and an Arctic Monkeys player study to tie it all together.
Level 6 completes Grade 4 — legato speed licks, major seventh chords, the Hendrix and Frusciante rhythm-lead style, and triads on the top three strings: the skills that finally let you see the whole neck.