Watch the Texas Rain Solo online guitar lesson by Jeff McErlain from Essentials: Advanced Blues Soloing
Please keep in mind that this is an advanced course, so what does that mean? In this case, I'm not talking about speed based chops, I'm talking about hand control and note choice. To me, those are the hallmarks of a truly great player and what I aspire to every day. Hearing someone who is expressing music and emotion through their hands is always inspiring to me and far more impressive than having a lot of technical prowess.
The solo contains some tricky vibrato and bends and also combines the two, which in itself is a lot of work. The relaxed feel and placement of the notes is something that needs to be worked on and given a lot of attention. So, when I say advanced, these are the things I'm talking about. Having control over what it is you want to play.