The tempo of the Muddy Water's video Bill posted is 115 bpm, and Pickett's video is even slower at 110 bpm...but, I'd say 120 bpm might be a little better for dancing.
The default tempo for the Yamaha Blues Rock style is 120 bpm.
There is also a Yamaha Premium (or maybe it's a DOO) style, that also works really well, called Dublin Rock...it's default tempo is about in the middle at 116 bpm.
No matter what one of the above tempos are used, it is a really great tune.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.