For me, the original Nier I had on the 360 wasn't a masterpiece, but boy did that music keep me engaged which is why I didn't hesitate to pick up Automata.
Automata however was a 10/10 and they brought back some old favorites like Song of the Ancient's and there was a version of Emil from an Arrangement album that is top tier. But Pascal's Village and Amusement Park are my favorites from Automata.
Shameful plug - Friend A from Your Lie in April was also recommended on Spotify based on my Nier history. It scratched that itch so I was so confused when I went looking for where in the Nier series it was from and I got this random anime instead.