Deluxe two CD follow-up to her 2012 sophomore release Halcyon. Halcyon Days is a 28 track deluxe which features collaborations with Madeon ("Stay Awake"), DJ Fresh ("Flashlight"), and Nate Ruess from fun., who wrote "Goodness Gracious" especially for Goulding. The release also includes Ellie's cover of Alt-J's "Tessellate." Los Angeles hitmaker Greg Kurstin produced Halcyon Days' lead-off track, the beautifully dramatic "Burn."