A life in ballet: Monica Mason
'After so many years, this theatre has become my life, it's almost family'Monica Mason was 20 and still a very junior member of the Royal Ballet when she was presented with one of the defining opportunities of her career. She was at a house-warming party given by fellow dancers and among the guests was the company's rising choreographic star, Kenneth MacMillan. It was 1962 and Mason remembers that the music was very…