Franz Schreker
One of the first was Franz Schreker who included the musical saw in his opera "Christophorus" (1925–29) where it is used in the séance scene of the second act. Other early examples include Dmitri Shostakovich: he included the musical saw, e.g., in the film music for "The New Babylon" (1929), in "The Nose" (1928), and in "Lady Macbeth of the Mtsensk District" (1934).