Good news! I found the artist on soundcloud here: https://soundcloud.com/marksparling/sets/70-days The playlist doesn't have every song from the 70 days collection, but here is the list I used in case you want to dig deeper into the account and search. Keep in mind the versions in Drake are cut a bit to loop well in game.
day 6, day 8, day 45, day 50, day 64, day 65, day 67, and day 70
I will try to write him and see what we can do about a soundtrack playlist.