"It is a little odd how certain pieces become popular all of a sudden," said Victoria Simon, one of the people entrusted with setting Balanchine's ballets on other companies. "A few years ago, there were a lot of requests for 'Western Symphony.' 'Serenade' and 'Who Cares?' are done quite a bit.
"And this year, 'The Four Temperaments' is a ballet a lot of companies are wanting to do," she said.
Cong is the third of the company's veteran dancers - following principal dancer Alfonso Martin and senior soloist Alexandra Bergman - who will be retiring as performers at the end of this season.
"It is definitely the end of an era for the ballet," said Marcello Angelini, the company's artistic director. "Tulsa Ballet has a storied history, built by people who have dedicated their lives to the organization. Ma Cong definitely belongs in this group."