เพลงในอัลบั้ม The Book of Us : Entropy1Deep in loveDAY603:472Sweet ChaosDAY603:473EMERGENCYDAY603:174Rescue MeDAY603:215365247DAY602:536About NowDAY602:597OUCHDAY603:178Not FineDAY603:359Stop TalkingDAY603:4610Not MineDAY603:1511Like a flowing windDAY603:22อัลบั้มอื่นของ DAY6Psycho, Loveholic [THE 시즌즈: 이효리의 레드카펫] (Psycho, Loveholic [THE SEASONS: Red Carpet with Lee Hyo Ri])FoureverThe Book of Us : Negentropy - Chaos swallowed up in loveThe Book of Us : The DemonTHE BEST DAY2Finale