The New York City-based Isidore String Quartet was formed in 2019 with a vision to revisit, rediscover, and reinvigorate the repertory. The quartet is heavily influenced by the Juilliard String Quartet — in fact, it takes its name from JSQ founder Isidore Cohen — and the idea of “approaching the established as if it were brand new, and the new as if it were firmly established.” In this program, they move seamlessly from the great musical innovator of the 18th century to a trailblazer of the 21st: Billy Childs, whose String Quartet No. 2 (“Awakening”) was composed in the wake of his wife’s emergency hospitalization 10 years ago due to a pulmonary embolism. It takes the listener through the shock and chaos of the emergency room, the disembodied sonic experience of machines during an extended hospitalization, and subsequent recovery and healing.