High Hopes (a hidden track after the end of the song — https://en.wikipedia.org/wiki/High_Hopes_(Pink_Floyd_song)#C...): https://www.youtube.com/watch?v=jl0d0Q7MyzA
Young Lust (https://en.wikipedia.org/wiki/Young_Lust_(song)): https://www.youtube.com/watch?v=8EM_fK9eOaQ
Keep Talking (no phone call in the actual song, but Stephen Hawking’s voice was taken from a British Telecom advert — https://en.wikipedia.org/wiki/Keep_Talking): https://www.youtube.com/watch?v=HJ7zbzJZsjs