Thanks for the encouragement, Mike. This time it worked, without me unzipping it or anything. The pianist's name, as given on the site is different, too. In fact, the three time I've visited the site, the pianist's name has been different. I've never seen that before.

In the opera, that piece has three parts, like a round. It's quite lovely. YouTube has quite a few stand-alone versions of it, if you would like to hear it. However, the singers in the stand-alone versins aren't as downright sexy as the Dr. Falke of the Covent Garden version.

Wikipedia provides a ms for it, but it's awful complicated. Thanks again.