Need help finding a chill instrumental song from one of these melancholic ambient youtube song mixes.

https://www.youtube.com/watch?v=_cQJSiXjrRI&t=3520s - the song starts playing around 58:40
I tried using shazam and AHA music but both of these lead me to something completely unrelated and I'd really like to find the source for this song as it's really nice to listen to.