Watch the PG Tips online guitar lesson by Jeff McErlain from 30 Sweet Blues Licks You MUST Know
Let's learn a Peter Green lick that covers the changes from the I7 to IV7 chords on a blues. The lick mixes the A major and A minor blues scales in a classically cool and sweet blues lick.
Do me a favor and check out the tune "Watch Out" by Fleetwood Mac from their Blues Jam in Chicago Vol. 2. There will be a few licks from that tune peppered throughout this course. Why that tune? Because Peter really plays his butt off on it, and it's a nice moderate tempo so playing along is quite do-able. Of course, his note choice is excellent, but his phrasing is fantastic.