At the start of the second soundtrack, the character receives a bad phonecall telling him some negative news which makes him angry. This was an archive phonecall between President Lyndon B. Johnson and a reputable member of the public, telling the man that his son will be sent out in the army and the man is replying that his local newspaper has been asking for interviews. The second time we hear the conversation I have duplicated the voice twice. The original phonecall sounds exactly the same, the first duplicate has been pitch shifted down 4 semitones, and the other duplicate automates in pitch from high to low. This has created a really unnerving and cool effect in this regard. Screenshot provided below.
The audio will be provided in isolation here: https://soundcloud.com/svrdophobia/presidential-conversation