DAS RHEINGOLD

SAN FRANCISCO OPERA'S SUMMER SEASON ON CD AND DVD

San Francisco Chronicle Fri, 23 May 2008 8:21 AM PDT- Wagner's "Das Rheingold" (opening June 3) isn't really a stand-alone opera. It's the first installment of the entire "Ring" cycle, and both audio and video recordings tend to come as part of a complete set. Even with the passage of time, I still find...