The Genuflektors—once a trio, lately a duo— at least for the summer have a new third wheel in flutist Jeannine Giffear. Giffear takes off for Morocco in the fall, but in the meantime the Genuflektors (Giffear, KT on cello, Josh Gage on guitar) have declared a summer of collaboration and groovy exploration, drawing out the more atmospheric and even chaotic possibilities in Gage’s songs. The trio is joined by the slick Chris Cannon, the inimitable Leigh Stoner and the excellent Erin Verhoef. The show starts at 8:30pm tonight (Thursday, July 5) at Nietzsche’s.