In the evening I went to the Sokol party, which consisted of a small display of the best members, both male and female. I had to provide music for the exercises, some of which have their own special music (Czech, and rather good), but for others I had to improvise in waltz rhythm, and since nobody wanted any serious waltzes I brought shame on my grey hairs by playing Songe d'automne. They then marches to my 'March', in the course of which the audience (mostly themselves members of the gymnastics club) clapped along merrily to every beat in the bar. With the whole room thumping in rhythm, it was very effective.