Primitive rituals and early theatre in China and India utilized simple instruments and music to accompany performances. The Greeks emphasized the actor's voice and used music and amphitheatre acoustics. During the Renaissance, music was used between scenes and for effects. Realism in the late 1800s required practical effects. The phonautograph, phonograph, tape recording and digital audio advanced sound recording technology. Cinema incorporated optical then magnetic film sound. Theatre initially used shellac records then tapes for effects but technology was unreliable until digital audio provided greater control for sound designers by the 1990s.