Watch the Double-Bump Jump: Solo 2 online guitar lesson by Steve Trovato from Voodoo Blues
Measures 3 and 4 introduce the technique of encasing. This means to
surround each chord tone with a note that is a diatonic step up and a half step below. The IV chord
is a C13#11 chord.
The last lick uses the surrounding concept again by encasing
the 3rd and the root of the G chord.