Gracie Gold's IN blog entry from yesterday says:
Originally Posted by missysays
"Sunday was the exhibition. There were wonderful solo performances from the top finishers and invited Japanese skaters, combined with group numbers choreographed by Japanese choreographers. Team USA opened the second half with a splendid performance using large purple chiffon scarves as props!"
Not 100% clear to me whether she means that the Team USA group number was one of the ones that had Japanese choreographers, but maybe so?