Auti is opening up about the tragedy of losing a friend. On Tuesday, PEOPLE is exclusively premiering the music video to Auti's song "4 Years," where she reflects on the death of her dear friend Luke.

"It’s taken me a couple of days to figure out how to write this," he began. There's no timetable to grieve the loss of a loved one; you just do the best you can and try to cherish that person's memory ...