Watch the Shoulda Quit You online guitar lesson by Corey Congilio from Blues Guitar Fakebook: Rhythm Vol. 1
"Shoulda Quit You" comes from the tune "Killing Floor". The first part is close to what you'd hear on a Howlin' Wolf or Albert King version. The second pass is a twist on the first part using small two note chords. I like this tune because it's using more major ideas and not 7ths. This one is super fun and a great song to call out on the jam.