“You've Changed” is an uplifting and soulful song that Lauren Flax mostly wrote on airplanes. Lauren Flax says, “All it needed to me were some black, soulful, Chicago house-style vocals, so naturally I asked my small, blond, Australian friend Sia.... haha. When I had gotten back to NY, she came over and we recorded all the vocals in my bedroom within 20 minutes. Pretty Epic. She’s amazing.”