Watch the Shuffle 8th "Heartbeat" online guitar lesson by Brad Carlton from Guitar Lab: Boogie-Woogie
The "heartbeat" approach is applied to a shuffle feel in this lesson. Open position in the key of E is used to demonstrate the bounce that is generated by varying the number of voices as well as the articulation when playing the boogie-woogie. I'll also explain picking schemes and how they affect the sound. It is imperative that you master both straight eighth and shuffle eighth rhythms, and this lesson when alternated with lesson one will help you achieve your goal.