San Francisco Opera production of Elektra. Photo by Cory Weaver.

San Francisco Opera production of Elektra. Photo by Cory Weaver.

Adrianne Pieczonka as Chrysothemis in San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Christine Goerke in the title role of San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Michaela Martens as Klytemnestra in San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Alfred Walker as Orest in San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Christine Goerke in the title role and Adrianne Pieczonka as Chrysothemis in San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Christine Goerke in the title role and Alfred Walker as Orest in San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Christine Goerke in the title role of San Francisco Opera's production of Elektra. Photo by Cory Weaver.

Christine Goerke in the title role and Michaela Martens as Klytemnestra in San Francisco Opera's production of Elektra. Photo by Cory Weaver.