Russell Thomas’s stint as the unknown prince Calaf in the eye-popping David Hockney-designed revival of Puccini’s Turandot at the LA Opera is winding to a close. But before he moves on, there’s another feather he’ll be adding to his cap. Billed as an “evening-length concert work,” Fire and Blue Sky marries words by the poet Imani Tolliver to music by the Emmy Award-winning composer Joel Thompson. How long is an evening, we wonder? The program also features an orchestral suite from Thompson’s opera The Snowy Day, after the children’s classic by Ezra Jack Keats. Lina González-Granados conducts. —Matthew Gurewitsch