After our trip to Yalta, a command performance of the Black Sea Fleet Revue was offered.  The troupe included a men's chorus, a band that included mandolins and accordions, and dancers.  All were very good, and our audience loved them.  One of the high points was parts of Vivaldi's "Four Seasons" on mandolin -- amazing -- a perfect fit to the music!  The singing was all wonderful, both in the Russian tradition and other music.