For the last installment of Red Bull's 20 Before 15 series (between December 1 and today, they premiered exclusive tracks from some of the year's best artists, including D'Angelo and the Vanguard's "Sugah Daddy" and Lil Herb and Earl Sweatshirt's "Knucklehead"), they've closed out with not one but four new tracks. The highlight is a new remix of 2014 All Star iLOVEMAKONNEN's poignant "Down 4 So Long," with guest verses from Queens rapper Despot and Vampire Weekend's Ezra Koenig (with bars like, "Shmoney dancing with some goth teens"). Stream the track below; only 1000 downloads are available, so think fast.