Rare performance: The great Hasidic singer Mordechai Ben-David Werdiger and the world-renowned cantor Icha Meir Helfgott gave an unforgettable performance yesterday at the prestigious Waldorf Astoria Hotel in Jerusalem, conducted by Yoeli Diekman • Receive Helfgott with 'Jerusalem of Gold', a duet of 'Ve'ereb Plenich Atiratnu' by Rechnitz, Ben-David's Shir HaKokhavim and more • The Haredim 10 website presents 23 minutes of the performance