The origin of the Soviet disco tradition, one that lasts to this day in the DJ-laden nightlife of Moscow and St. Petersburg, lay in the Stalinist era. Western culture – modernism, cubism, rock and roll, all that good stuff – was “decadent,” perhaps even a plot by Trotskyists or the Western intelligentsia to dull the steely nerves of the Soviet people. But dancing – this was a-OK.