Sure it’s hot. So what? When you dance, you sweat out poisons. Think how pure you’ll feel after a few waltzes and a hambo or polka supplied by WAVERLEY STATION: David Knight (fiddle), Barbara Heitz (flute), Liz Donaldson (piano) and Ralph Gordon (bass). As always, there’s a beginner lesson at 2:45; music at 3:30. Admission $10. No partner needed. Please wear shoes that will be kind to the historic wood floor.