The men and, now, women of the French-Algerian Hervé Koubi’s troupe spin on the floor, fall from a platform made of their fellow dancers’ shoulders into a soft nest made of their arms, and tumble through the air—like a vision. For Sol Invictus—part of the Festival in New York, the month-long fête from the major international producer Dance Reflections by Van Cleef & Arpels—billows of parachute cloth and the tight weave of soft-palmed drumming supplement the loose garments flaring around the dancers’ limbs to create this silken dream. But whatever the show, it is a Koubi signature to soften normally bravado steps (the b-boy head spin, the capoeira kick) so they appear at once organic and mystical. Chez Herve Koubi, plain stuff becomes poetry. —Apollinaire Scherr