Derek Welton returns to Bayreuther Festspiele as Klingsor 20/7/2018 Derek Welton is back at the Bayreuther Festspiele as Klingsor in Uwe Eric Laufenberg’s production of Parsifal under Semyon Bychkov, opening 26 July. Shirley Thomson +44 (0)20 3725 9173 shirley.thomson@harrisonparrott.co.uk News Derek Welton sings Dream of Gerontius with Boston Philharmonic Orchestra News Derek Welton sings Pförtner in Korngold’s Das Wunder der Heliane