Dick Mills and Delia Derbyshire remember bringing the iconic tune to life at the BBC.

Two of the best-known members of the Radiophonic Workshop explain how they recorded the electronic theme for Doctor Who using composer Ron Grainer’s score in this ace archive clip.

After that, watch The Vinyl Factory’s short documentary on the history and influence of the BBC’s famous sound effects studio and find out about the album for audiophiles that the reincarnated Radiophonic Workshop have been working on.

Doctor Who fans should check out The Sounds of Time, our look at 50 years of the cult TV show’s influential music and sound effects. [Hat tip Chris Carter]