Watch the Slow Fuse online guitar lesson by TrueFire from Play Acoustic Guitar 6: Lick Lexicon
Slow Fuse - Overview is a video guitar lesson presented by David Hamburger and is sourced from Essentials: Fingerstyle Blues.
I love how the call-and-response approach allows you to reference more of an ensemble sound. More than just putting a few licks over a steady bass, you can start to sound as if you were two or more people, one of whom is laying down a groove while the other drops in all sorts of cool single-note commentary in between. Imagine yourself as a harmonica-guitar duo, a band with a horn section, or even just the left and right hand sounds of a barrelhouse pianist, and you'll begin hearing all sorts of possibilities for combining the steady thumb, your single-note licks and various kinds of double-stop- and chord-based riffs.