Watch the Towards The Door online guitar lesson by Anthony Stauffer from 50 Slow Blues Licks You MUST Know
Great blues players can highlight chord changes in their soloing, but they can also drop hints about what is coming next. This lick is one that Albert King used all the time, right before bar #9. The lick hints at the approaching transition to the V chord. It sounds a bit like someone getting ready to walk out the door.