When George Balanchine brought his Nutcracker ballet to Cologne with the New York City Ballet , he was a guest artist for the company .
In Cologne , Kresnik developed his skills quickly and worked as a principal dancer for the Cologne Opera from 1964 to 1968 .
When George Balanchine brought Kresnik 's Nutcracker ballet Cologne Cologne with the New York City Ballet , Kresnik was Kresnik   artist for the company .
In Cologne , Kresnik developed his skills quickly and worked as a principal dancer for the Cologne Opera from 1964 to 1968 .