Christus Apollo: Cantata Celebrating the Eighth Day of Creation and the Promise of the Ninth is a cantata in four movements for narrator, mezzo-soprano, choir, and orchestra, based on a text by the science fiction author Ray Bradbury and composed by the American composer Jerry Goldsmith. The piece was commissioned by the California Chamber Symphony in 1969, and premiered later that year in Royce Hall at UCLA with the narration performed by Charlton Heston (who had starred in the 1968 film, Planet of the Apes, for which Goldsmith had composed the musical score).