[quote name='Bilbo' post='770365' date='Mar 10 2010, 01:42 PM']Don't play 'Mustang Sally' [/quote]
Or if you do, take Bilbo's approach when he plays it and give some space for a series of improvisations in the middle, or abandon the strict notion of a chord progression and allow the individual musicians to improvise even more freely within the context of a given scale or mode. If you do it after a few pints, you should abandon all chords, scales, and rhythmic meters.
That's jazz