Tonight's performance of Tosca at the Lyric Opera of Chicago was the season opener. Apparently this is a high point in the city's social calendar, as people were dressed to the nines for the occasion. Surrounded by men in tuxes and women in gowns, I felt lucky I had thought to pack a jacket and tie so I was at least presentable. The opera itself was an enjoyable production--a traditional staging of his Puccini work, in sharp contrast to the controversial new version just launched at the Met this past week.