An exhibition is currently showing at the Royal Opera House in Covent garden, titled Sylphides and Faeries.Well I know what a fairy is but what is a sylphide?
A short ballet with no story but dancers in white, sylph like creatures, dancing in moonlight. (according to wikipedia).
So puppets, beautiful costumes and lithographs are all on view. I also learned that La Sylphide was the first ballet that had ballerinas balance on their toes for most of the production.