By now, you’ve probably worn a t-shirt in the evening and have spent countless hours, and tissues, trying to find the balance between a runny nose and complete congestion. Summer in Louisville is beginning. While allergies are an all-to-well-known rite of the changing of the seasons here, a fun annual tradition is gearing back up as well. WPFK and The Waterfront Development Corporation are bringing back Waterfront Wednesdays on April 27 with performances by Ohio pop quartet Walk the Moon, Texas singer and songwriter Sara Jaffe, and local electro-pop group The Deloreans.