Watch the 5 For 1 online guitar lesson by Jeff McErlain from Solo Factory: Chicago Blues
Here is a tricky V7- IV7 -I7 lick that is pretty involved so proceed with caution! The lick is based upon the composite blues scale. The composite blues scale is when we mix the minor and major blues scales. To put into context: A minor blues is spelled ACDEbEG. A major blues is spelled ABC#EF#. When put together we get the composite scale ABCC#DEbEF#G. Whoa! A nine note scale? That's a lot to think about! The idea here is to think about the chord tones on any given chord that we are on. The rest of the notes you can simply think of as being from the blues scales. Very rarely with anybody play this as a scale from top to bottom. The best introduction to this scale would be to add in your natural third tier minor blues scale. If you were interested in takinging it deeper into the scale please check out my Lead Guitar Survival Guide here at TrueFire. This is the most important scale and playing the blues after the minor pentatonic scale.