Also: Kim Edwards, Nik Everett, Lindsey Saunders highlight Labor Day weekend By Denny Dyroff, Staff Writer, The Times Junior Sisk & Rambler’s Choice are the featured artists at Longwood Gardens open air show, Friday night. If you’re involved in something and nature calls, you’ve got to suspend whatever you’re doing at the time and answer the call. Everybody knows that. If you’re a songwriter...