Watch the How To Play the Inevitable 12/8 Slow Blues Like a Pro online guitar lesson by TrueFire from Blues Guitar Greatest Hits Vol. 1
Lesson Source: Jeff Scheetz's Blues Jam Survival Guide
The slow blues is maybe the most common thing you are going to hear at a jam night. Mostly due to the fact that there are so many songs that use this format. So it is crucial to your jam night bag to have this down pat, and have some variations you can pull out and use.