Watch the My Name is Earl online guitar lesson by Jeff McErlain from Solo Factory: Chicago Blues
I love this intro lick. I first heard this lick in Earl Hooker's tune "My Man". This one is a little tricky to play and can be played out of time as an intro to just about any blues tune. Robert Johnson was famous for this kind of intro. He would often use a standard intro and use it over many different feels, many of them were unrelated. I really like the contrapuntal motion at the end of the lick.