Watch the Approaching the IV online guitar lesson by TrueFire from 50 Licks Greatest Hits Vol. 2
Lesson Source: Anthony Stauffer's 50 Slow Blues Licks
You can add a lot of polish to your soloing by playing licks that highlight the changes of the chord progression. In this lick, B.B. gently accents the transition to the IV chord at bar #5, then follows the accents with a wide bend, adding just enough tension to the lick.