I would just sit in the Resistance Camp and listen to this song for hours. That's where a majority of my time went into playing this game.

CALM

NieR Soundtrack -- Grandma

Full NieR: Automata playlist

https://soundcloud.com/soobag/sets/nier-automata

Full Nier: Automata playlist

soundcloud.com/soobag/sets/nier-automata

Nier: Automata Original Soundtrack (ニーア オートマタ) BGM - Disc1
More on my channel :) 
https://www.youtube.com/c/Sekainofantasy90Re