Cuba is famous for its music. A lot of people have heard of artists like the Buena Vista Social Club and Celia Cruz. But the country also has a long history of cultivating classical composers and performers. On a recent trip to Cuba, I met one group that stands out. In a country as stereotyped for its machismo as it is for its mambos, you might think an all-female classical ensemble would face an uphill struggle. But Cuban conductor Zenaida Romeu says that's not so. Romeu founded her group, Camerata Romeu, 23 years ago. She wanted to show off the parity between men and women she saw in h