“Jock Soto retires from the New York City Ballet’s stage on June 19 at the age of 40, after 25 years with the company. For the latter part of that period he has been extolled as a partner—as if that were his main (even sole) virtue, as was, essentially, the case with the company’s Conrad Ludlow in the past and Charles Askegard today.” But there was so much more to his dancing…