“Counter Plot”, Scene 3: 'j' Room, Experimental Station

On these albums

Doctor Who: The Daleks’ Master PlanTerry Nation & Dennis Spooner starring William Hartnell, Peter Purves & Adrienne Hill · 2001Soundtrack

Doctor Who: The Lost TV Episodes - Collection TwoVarious Artists · 2011

Source: MusicBrainz recording af75f3bc-dded-4cf7-8a97-bc19b13f0d3a (CC0).