DESCRIPTION: Parsifal (WWV 111) is an opera in three acts by Richard Wagner. It is loosely based on Wolfram von Eschenbach's Parzival, the 13th century epic poem of the Arthurian knight Parzival (Percival) and his quest for the Holy Grail, and on Chrétien de Troyes' Perceval, the Story of the Grail.