Mayerling is also my favourite ballet, the passion and despair is unrivalled in any ballet and was Kenneth MacMillian's masterpiece. I first saw Mayerling almost 24 years ago and have owned the dvd of the 94 ballet for 23 years now. This South Bank show special on Mayerling is fascinating and one I didn't even know existed, as I would have been three in 78. Many thanks for the upload.
