 The music accompanying the journey of the Martian Space Probe in the  episode "Day of Disaster" is entitled "The March of the Oysters".  Originally composed by Barry Gray (I) (qv) for the  _"Stingray" (1964)_ (qv) episode "Secret of the Giant Oyster", the  piece is also heard in "30 Minutes After Noon", "The Impostors" and  "The Cham