Lehár’s The Merry Widow
Starring Renée Fleming, Kelli O'Hara, Nathan Gunn, Alek Shrader, and Sir Thomas Allen, conducted by Sir Andrew Davis. From January 17, 2015.

Now available in your browser or download the app at the IOS or Android Store, click on “Explore The App” and click on “Free Preview”. That entire opera is available for 23 hours.