Doctor Who first aired on the BBC in 1963, and its opening theme, composed by Ron Grainer and realised electronically by Delia Derbyshire at the BBC Radiophonic Workshop, became one of television's earliest fully electronic title themes. This version is the 1970s arrangement derived from that original recording, retaining the distinctive melody while updating the mix for the colour era. Decades later it remains widely sampled, parodied and reused online whenever creators want to signal classic British science fiction and time travel.