Watch: Singer Duvid Berger and the Yedidim Choir perform a Yiddish song with a story they attribute to the Tzemach Tzedek, along with a sand artist who illustrates the story as they sing. On a recent Motzaei Shabbos at the Rayim Shabbaton, they performed ‘Sod Shel Mashke’ based on a Chabad story • Watch