The Frankfurt Ballet gave its final performance Sunday night. “After many curtain calls and a few tears, the Frankfurt Ballet ceased to exist. One of the most exciting chapters in contemporary dance was over. As one troupe dies, however, another is taking shape, because a new Forsythe Company should be born in January. And it too will be based in Germany. Unlike the Frankfurt Ballet, which worked from the Frankfurt opera house, the Forsythe Company will have two homes.”