“The dance is something of a tease, depositing as it does two powerful, subtle performers in what looks like a ropeless boxing ring, then seldom letting them draw close. Mr. Jones and Ms. Reine-Adelaide might be two old friends engaged in a far-ranging but carefully cool conversation full of piquant and wistful allusions to the past they share. “New Duet” is set to folk songs from Madagascar and music by John Oswald and Laurel McDonald, with lighting by Gregory Bain and stylish costumes by Ms. Maslova.”