Film composers began using electronic instruments in their scores - for example, Vangelis's uplifting score for "Chariots of Fire", Miklós Rózsa's pioneering use of the theremin in Hitchcock's "Spellbound", Bernard Hermann's use of the trautonium to produce all the terrifying bird sounds in Hitchcock's "The Birds", and Walter/Wendy Carlos's score using Moog synthesizer for "A Clockwork Orange".