Hoodoohat is playing hard in the Jadlodajnia Filozoficzna, a nightclub in Warsaw's University district, but the band's music is echoing off the walls of an almost empty room.

As the group takes a break between sets, top-hatted lead singer Konrad strolls over to the bar. The problem, he says, is that mass migration of young Poles to western Europe following Poland's 2004 entry into the European Union has knocked the stuffing out of the local music scene.