Update: according to this YouTube video, the track is called "Golden Arrow":
Gather 'round: Nicolas Jaar is offering a free download to the opening track of his new DARKSIDE album. The mp3 comes courtesy of Jaar's new venture called Other People. In short, you subscribe to this "serial label" for $5 a month, or $50 a year, to gain access to weekly "issues" featuring a free download. The slow-burning beauty of "1120" will be Other People's only free download, but goddamn it's great. Enjoy it, below:
mp3: DARKSIDE - "1120"