Vesper Primer+Free Or Non Actions+Dancing Display

Whenever you successfully make an attack with a weapon wielded in one hand in the same round you make an attack action (including the attack action itself), you can move 5 ft. as a free action; this movement doesn’t provoke attacks of opportunity from the creature attacked. You cannot move in this way if you haven’t made an attack action yet that round. You can also use an attack roll in place of a Perform (dance) check in order to make money. At +10 base attack bonus, you can instead move 10 ft., and you may roll twice for the attack roll used in place of a Perform (dance) check, taking the better result.