Watch the Rumba Blues online guitar lesson by Jeff McErlain from Blues Guitar Survival Guide - Lead
One of the keys to soloing smoothly and mixing scales is to learn the notes we want to use in the same position on the neck. As you run through this study you can see that I am changing from D major to D minor pentatonic in the same position on the neck. I am not jumping around, when I see guys do that it tells me that they don't know the guitar neck all that well and their playing can sound disjointed. I do this with everything I play over, I will run over my positions for each scale for each chord so there are no surprises. I may make a mistake but it's not because I didn't know what note I wanted, I just simply messed up, which happens all the time!