NEW: ‘Siegfried and Roy’ | What Really Happened THAT NIGHT? Now, more than 15 years since the jaw dropping tiger attack – emotional new interviews, new details and stunning rare video. Watch the 2-Hour ‘20/20’ Television Event – Friday night at 9|8c on ABC. | ABC 20/20

In the final dress rehearsal of Wagner's Siegfried, tenor Stefan Vinke sings an excerpt from the title hero’s Act I Forging Song. The complete Ring cycle is on stage through May 11: bit.ly/2TTcEWA | The Metropolitan Opera

Christine Goerke, Soprano and tenor Stefan Vinke sing an excerpt from the triumphant finale of Wagner's Siegfried during the final dress rehearsal earlier this week. On stage Saturday, April 13: bit.ly/2X18UPV | The Metropolitan Opera