an Entity references as follows:
Ekkehard Wlaschiha (German pronunciation: [ˈɛkəhaʁt ˈvlaʃɪhaː]; 28 May 1938 – 20 February 2019) was a German operatic baritone who specialized in Wagnerian "villains", such as Alberich, Klingsor and Friedrich von Telramund. He performed at the Bayreuth Festival and at the Metropolitan Opera, and left many recordings.