From the recording Backing and Jam Tracks for Bass Guitar Vol. 4
This backing track is a straight forward 12-bar blues with simple triplet-based swing feel. The challenge here is to create energy and feeling even at a slow tempo without rushing the beat. Think of "Red House" by Jimi Hendrix. There is plenty of room at this tempo to work out your bass guitar licks in the key of C. 58 BPM.
||: C7 | | | | F7 | | C7 | | G7 | F7 | C7 | C7 G7 :||