The waterphone was developed in the 1970s by American inventor Richard Waters, who combined a steel resonator with water to create its sliding, metallic tones. Film and theatre composers soon adopted it because no other instrument could produce quite the same unsettling wail, and it became a familiar sound in horror and science-fiction scores. This recording comes from a theatre project using the instrument live on stage, where its strange, echoing voice helps build atmosphere without dialogue. It remains popular with creators who want an instantly eerie, cinematic effect.