Watch the Double Stops online guitar lesson by Fareed Haque from Soul Jazz Survival Guide
Set up tip: For this kind of music, clear, bright fat tone is the usual choice. Typically, we're talking about a Fender style tube amp, a jazz hollow or semi-hollow body guitar, with flat wound strings, and enough brightness and enough attack so that you can really get into the rhythm and placement and punch of the lines. Soul jazz is not for the faint of heart!
For these recordings, I'm using a set of D'Addario Chromes .013 - .56 with an .015 replacing the high E-string. Probably wouldn't go lower than an .011 set for this kind of tone, depending on your touch, thickness of your pick, and the type of guitar. The most important thing is a clear, fat, and rhythmic attack.