When Kiri Te Kanawa celebrates her 70th birthday with a Martin Theatre recital on Aug. 12, she will sing the world premiere of Newer Every Day, a set of five songs based on the poetry of Emily Dickinson, composed by Jake Heggie, who will accompany her on piano. Heggie is best known as the composer of one of the most successful operas of recent times, Dead Man Walking. The rest of the program has now been released and includes nine pieces by R. Strauss and works by Mozart, the composers most associated with the singer. The singer, who recently appeared on Downton Abbey, will also sings works by Mozart, Granados, Obradors and Guastavino, accompanied by Kevin Murphy, director of the Program for Singers at Ravinia's Steans Music Institute (RSMI). Kiri herself will give a free master class for RSMI singers in Bennett Grodon Hall at 2:00 p.m. on Aug. 10 in preparation for their Aug. 11 "Richard Strauss and Friends" concert.