Cage can sound sometimes metronomic — the dancers bend to the floor, their arms flopping like a rag doll or their hands waving just above it — and sometimes like machinery grinding, banging, and clanging. The latter impression is also echoed effectively in the dancers' movements, as arms roll around their midriffs or are flung upward as they leap in arabesque.
The last piece by the five dancers is a structured improvisation dedicated to one of the Boston bombing victims — a three-year-old who lost a foot. Hunter explained in a Q&A after the show that such a dance has defined rules, but it's like "scribbling in space."
The JUMP! dancers performed confidently, expressively, and with much grace and humor. After all, so does their mentor and director, Paula Hunter.