Watch the Level 1: Jazz Blues Soloing online guitar lesson by David Hamburger from Take 5: Jazz Blues Soloing
Rhythm is a huge part of getting inside a new style, or in this case, a sub-genre of a style. A big part of the jazz-blues sound is creating a steady flow of eighth notes, and you can hear right away how different this study sounds from, say, a Freddie King solo. Part of it is the use of brighter scale tones like the major 3rd, major 6th and the 9th. But it's also about using those notes to play in a more stepwise manner, and in so doing, create the kind of longer, more flowing phrases that characterize this style.