Black Oak Ensemble, a string trio boasting three of Chicago’s most enterprising and dynamic chamber musicians, makes its recording debut with Silenced Voices, an album of intriguing works by six promising, early 20th century Jewish composers originally from Austria-Hungary, Czechoslovakia, and the Netherlands. One survived World War II as a member of the Dutch resistance, the others perished in concentration camps and elsewhere in Nazi-occupied Europe. Silenced Voices includes the world premiere recording of wartime survivor Geza Frid’s early Trio a cordes, Op. 1, an inventive work infused with Hungarian folk music influences. Composer-cellist Paul Hermann’s Strijktrio, a forward-looking, cosmopolitan work from the early 1920s, shares its melodies among all three instruments. Dick Kattenburg’s youthful Trio a cordes was praised in a 1938 concert review for its “remarkable mastery and a very personal style.” Gideon Klein’s Trio for violin, viol...