This blues jam track is a 12-bar blues in the key of C. After a quick turnaround intro, the classic 12 bar structure begins. The groovy thing about this jump blues backing track is that the first accents of the piano and the electric guitar are on a different eight note. This (intentional) quirky effect is augmented by a little stereo panning of the guitar and piano. This makes the rhythm accompaniment ‘jump’ from left to right.