Ellie Goulding's third studio album, Delirium, was initially released on November 6, 2015. The album marked a significant departure from her previous works, as it featured a more experimental and mature sound. The Deluxe Edition of Delirium was later released, which included additional tracks, making it a comprehensive package for fans. The album's release was met with widespread critical acclaim, with many praising Goulding's vocal prowess and the album's eclectic sound.