SHAKE your tail feather on the streets with the contunuing summer season of events at Pavilion Dance, Dancing Terraces. Every weekend throughout the summer, on a Friday or Saturday evening from 7-9pm, the terraces, which overlook the Lower Gardens and seafront, come alive with music, dancing and fun for all ages and abilities. Today sees a salsa theme for the free outdoor dance classes. While tomorrow sees an afternoon treat of street dance from 12pm to 1pm and 2pm to 3pm.