Premieres Friday, Feb. 24, 2023 at 9 p.m. and Sunday, Feb. 26 at 2 p.m. on KPBS 2 / PBS App. Glimpse behind the curtain at opera legends Kathleen Battle and Jessye Norman's famed concert at Carnegie Hall on March 18, 1990, featuring performance clips and new interviews with opera star Angel Blue, Met Opera General Manager Peter Gelb and more.