The Sky at Night is a monthly documentary television programme on astronomy produced by the BBC. The show had the same permanent presenter, Patrick Moore, from its first airing on 24 April 1957 until 7 January 2013, Moore having died on 9 December 2012. This made it the longest-running programme with the same presenter in television history. Many early episodes are missing, either because the tapes were wiped or thrown out, or because the episode was broadcast live. Beginning with the 3 February 2013 episode, the show has been co-presented by Lucie Green and Chris Lintott. The programme's opening and closing theme music is "At the Castle Gate", from the incidental music to Pelléas et Mélisande by Jean Sibelius, performed by the Royal Philharmonic Orchestra and conducted by Sir Thomas Beecham.