"The Harmonists'' tells the story of the rise and fall of a vocal group that was wildly popular in Germany before it was disbanded in 1934 as part of the mounting persecution of Jews. The Comedian Harmonists, who did comic and romantic songs in intricate harmony, were popular and beloved. Even members of the Nazi hierarchy were among their fans. But eventually they were forbidden to sing songs by Jewish composers--and finally, because three of their members were Jewish, they were banned from performing in public. Advertisement Given the suffering created by the Nazis, the fate of the Harmonis...