Harry Kupfer's version of Gluck's Orfeo ed Euridice, originally conceived for the Berlin Komische Oper and now in the repertory of The Royal Opera, won the Olivier Award for ''Most Outstanding Achievement in Opera''. According to legend, Orpheus' magical power as a musician enabled him to regain his wife from the dead on condition that he did not look at her on the journey back from Hades - a condition it proved impossible to fulfil. In Harry Kupfer's updated version, Orfeo, in leather jacket, trainers and jeans, sees his Euridice die in a street accident. Succumbing to depression, he languishes in Hades - a psychiatric hospital - before taking his electric guitar to charm the beasts in an inner-city concrete jungle. Hans Schavernoch has designed an ingenious set with projected imagery on revolving screens and mirrors. The German male alto, Jochen Kowalski, gives a virtuoso performance as the tormented Orfeo, with the young British soprano Gillian Webster as Euridice.