Previously of the Grammy-winning Turtle Island Quartet, Jeremy Kittel demonstrated similar scope as a composer-arranger- collaborator for such diverse artists as My Morning Jacket, Yo-Yo Ma & the Silk Road Ensemble, and Bela Fleck & Abigail Washburn. But for the last few years, the Brooklyn-based artist has been diligently building his own repertoire of music for a wholly original new group.