Tenor Lance Ryan (L) and soprano Mirella Hagen during a rehearsal of Wagner's "Siegfried" in Bayreuth, Germany

A handout photo released by the Bayreuth opera festival shows tenor Lance Ryan (L) and soprano Mirella Hagen during a rehearsal of Wagner’s “Siegfried” in Bayreuth, Germany. Frank Castorf’s new production of “Siegfried”, the third part of Richard Wagner’s monumental “Ring” cycle, drew deafening boos at its premiere late Monday for featuring copulating crocodiles and Kalashnikov rifles.