Watch the Wine on the House online guitar lesson by Andrew Ford from Blues Bass Survival Guide
Now we have something like Etta James might do, a style recently popularized by some of the young retro British singers. It is a straight 12 bar blues progression with a 60's Motown type drum groove. The guitar doubles the bass line. It has a bit of the blues rumba flavor also. This is a fun, upbeat bass line that spotlights a motif using the minor 7th and chromatic connecting notes.