Two photographs on one sheet: Balerina Kay Mazzo of the New York City Ballet performs in George Balanchine's ''Nutcracker'' and informal portrait of Mazzo backstage at the same performance.

Peter Martins of the New York City Ballet performs with Kay Mazzo in Balanchine's ''Serenade,'' which aired on public broadcasting stations on television as part of the Great Performances series.

Balerina Kay Mazzo of the New York City Ballet performs with Peter Martins in George Balanchine's dance ''Stravinsky Violin Concerto'' which aired on PBS television stations as part of ''Choreography by Balanchine, Part 2'' on Great Performances.