Join La Cieca in a special edition of “Unnatural Acts of Opera,” recalling some great moments from magnificent Birgit Nilsson.

Part 1 includes selections from Die Walkuere, Lohengrin (with Astrid Varnay), Siegfried (with Hans Hopf), Goetterdaemmerung and Parsifal (with Helge Brilioth), plus “I Could Have Danced All Night.”

In Part 2, Nilsson is heard in Tannhaeuser, Salome (with Fritz Uhl and Grace Hoffman). “Traeume,” Tristan und Isolde (with Christa Ludwig) and Turandot (with Franco Corelli). A live 1973 performance of the “Liebestod” closes the program.