PRAGUE: Prague is famous in musical history, and on this trip we were determined to attend an opera in each of the three European cities we visited. In Prague it was a rarely performed work by Czech national composer Antonin Dvorak: Vanda (1875), in which a heroic queen of the Bohemian people sacrifices both love and life for her nation in the struggle against Germanic invaders. The production was disappointingly undramatic, but the music was gorgeous, as was the lavish National Theatre, a ten-minute walk from our rented apartment.