Watch the Combining the Pentatonic Scale & the Major Scale Overview online guitar lesson by Rob Garland from Melodic Soloing: Major Scale
Let's work through the pentatonic scale shapes and incorporating the major scale positions, over the roots rock jam.
Some of the pentatonic positions lend themselves to bluesy phrasing whereas the major scale provides more melodic options.
The chords for the roots rock jam are:
|C |C |Em |Em |C |C |Em |Em |F |F |G |G7 ||