When the drapes are pulled back in the classic 1939 film “The Wizard of Oz,” revealing an all-too-human carnival huckster pretending to be the great and terrible Oz, he calls out, “Pay no attention to ...

Film music began, wrote Kurt London in 1936, “not as a result of any artistic urge, but from the dire need of something which would drown out the noise made by the projector”. But when the offending ...