Janos Gereben

The star in the San Francisco Opera's summer run of Der Rosenkavalier, which opened Saturday, is Richard Strauss' music; higher praise is difficult to come by. Under Donald Runnicles' direction, the orchestra played marvelously the complex, interwoven layers of music that constitute this nearly century-old score, which has lost none of its modernity and power.

You may notice her 6-foot-plus height first, but when Kendall Gladen begins to sing, she makes another, far more important impression. Even at an age that's young for a mezzo, and at the beginning of her career, Gladen has the "it" of the It Girl, a certain something, the je ne sais quoi.

During her recent Merola and Adler years, Melody Moore developed a reputation and an avid fan base. Her operatic and song cycle performances well earned her both.

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Seinfeld fans fondly remember "Festivus," the holiday made up by George's father to get around the Christmas/Hanukkah dichotomy. In the world of music festivals, too, there is a difference between the real thing and festivals in name only. A real summer music festival has a special place of its own — think Salzburg, Aspen, Tanglewood — and it isn't just the extension of a regular season.