FAKE NEWS!! They’re NOT sisters: Liz Donaldson (piano), Tina Chancey (fiddle), Paul Oorts (button accordion, mandolin, banjo, guitar) and Ralph Gordon (bass). TRUTH: They’re really good musicians. At 2:45, there’s a beginner waltz lesson, included with admission of $13 per person ($5 with valid student ID), cash or check, payable at the door. Music from 3:30-6:00. Bonus: Weather will be perfect for dancing.