Listen to Parsifal, WWV111: Nur eine Waffe taugt online. Parsifal, WWV111: Nur eine Waffe taugt is an English language song and is sung by North German Radio Symphony Orchestra, Ben Heppner and Donald Runnicles. Parsifal, WWV111: Nur eine Waffe taugt, from the album Tenor Arias: The Definitive Collection, was released in the year 2017. The duration of the song is 4:11. Download English songs online from JioSaavn.