(Credit: Frances Marshall) The Philharmonia Orchestra is set to present “The Bach Choir: The Dream of Gerontius” on May 16, 2024 at the Royal Festival Hall. The showcase will be conducted by David Hill and features mezzo-soprano Jennifer Johnston, tenor Daniel Norman, and baritone Roderick Williams as the vocal soloists. The program includes the world premiere of Roderick Williams’ “Cusp,” {…}