Над альбомом работал композитор Harumi Fuuki (アイミタガイ, Клуб стрельбы из лука, NHK Drama 10 - Single Mothers), а его релиз состоялся 25 марта 2026 года. На саундтрек попало 35 композиций общей длительностью более часа. Подборка является компиляцией оригинальной музыки. Выпуском пластинки занимался лейбл 西野亮廣/「映画 えんとつ町のプペル ～約束の時計台～」製作委員会.
CD 1
| 1 | We Have to Move ForwardHarumi Fuuki | 00:46 | |
| 2 | The Hands of the Clock Will MeetHarumi Fuuki | 02:51 | |
| 3 | Stars Above the SmokeHarumi Fuuki | 00:38 | |
| 4 | Memories of Poupelle (Pt.1)Harumi Fuuki | 00:30 | |
| 5 | Chasing the BraceletHarumi Fuuki | 02:18 | |
| 6 | A Talking Cat AppearsHarumi Fuuki | 01:47 | |
| 7 | The Boat CourierHarumi Fuuki | 01:21 | |
| 8 | Hóla’s MansionHarumi Fuuki | 00:45 | |
| 9 | His Name Is MoffHarumi Fuuki | 01:13 | |
| 10 | Chasing the Bracelet RepriseHarumi Fuuki | 00:34 | |
| 11 | The Couriers’ LineHarumi Fuuki | 02:09 | |
| 12 | Arm Wrestling at the Candy TavernHarumi Fuuki | 01:04 | |
| 13 | 366 Days (Nagi’s Song Ver.)小芝風花 | 02:41 | |
| 14 | Uppercut at the Candy TavernHarumi Fuuki | 01:11 | |
| 15 | Brawl Inside the Candy TavernHarumi Fuuki | 00:39 | |
| 16 | Hotchpotch Special DinnerHarumi Fuuki | 01:59 | |
| 17 | The Water Burial CeremonyHarumi Fuuki | 01:03 | |
| 18 | It Still Hurts… A LotHarumi Fuuki | 00:40 | |
| 19 | In Search of the ClockmakerHarumi Fuuki | 01:36 | |
| 20 | The Diva of the Candy Tavern (Suspended)Harumi Fuuki | 01:26 | |
| 21 | TsukumogamiHarumi Fuuki | 00:54 | |
| 22 | Toki FestivalHarumi Fuuki | 02:06 | |
| 23 | John Ryan’s PolkaHarumi Fuuki | 02:10 | |
| 24 | Gas and Nagi’s DriveHarumi Fuuki | 01:15 | |
| 25 | Won’t You Come to the Clock Tower?Harumi Fuuki | 01:27 | |
| 26 | Infiltrating the Clock TowerHarumi Fuuki | 00:56 | |
| 27 | Searching for NagiHarumi Fuuki | 04:47 | |
| 28 | Memories of Poupelle (Pt.2)Harumi Fuuki | 01:09 | |
| 29 | The Girl from the ForestHarumi Fuuki | 02:00 | |
| 30 | To the Forest Where Nagi LivesHarumi Fuuki | 03:41 | |
| 31 | 366 Days (Piano Ver.)Harumi Fuuki | 04:02 | |
| 32 | To the Clock Tower Where Gas Is WaitingHarumi Fuuki | 02:10 | |
| 33 | Frozen in TimeHarumi Fuuki | 03:56 | |
| 34 | Poupelle of Chimney TownLozareena | 05:55 | |
| 35 | little starLozareena | 04:15 | |
