Watch the Double Stop Vamp online guitar lesson by David Hamburger from Fingerstyle Blues Factory

One thing to think about as you learn to play licks over a steady bass is that you’re either playing with the thumb, or you’re not. And by that piece of seemingly-smartass advice I mean: get the thumb in place, plunking out those quarter notes in the bass, and then notice where you’re pinching notes on the upper string with the bass, and when you’re playing a note (or notes) that land in between bass notes. It’s one or the other.