Musik untuk Album Soundtrack Film It (2017) disusun oleh Benjamin Wallfisch. Album ini dirilis di iTunes pada tanggal 8 September 2017. Album ini diisi dengan 38 lagu. Berikut daftar lagu yang ada di dalamnya.
Daftar Kumpulan Lagu Soundtrack Film It (2017)
1. Every 27 Years
2. Paper Boat
3. Georgie, Meet Pennywise
4. Derry
5. River Chase
6. Egg Boy
7. Beverly
8. Come Join the Clown, Eds
9. You'll Float Too
10. Shape Shifter
11. Hockstetter Attack
12. Haircut
13. Derry History
14. January Embers
15. Saving Mike
16. This Is Not a Dream
17. Slideshow
18. Georgie's Theme
19. He Didn't Stutter Once
20. 29 Neibolt Street
21. Time to Float
22. It's What It Wants
23. You'll Die If You Try
24. Return to Neibolt
25. Into the Well
26. Pennywise's Tower
27. Deadlights
28. Searching for Stanley
29. Saving Beverly
30. Georgie Found
31. Transformation
32. Feed On Your Fear
33. Welcome to the Losers Club
34. Yellow Raincoat
35. Blood Oath
36. Kiss
37. Every 27 Years (Reprise)
38. Epilogue - The Pennywise Dance
Lagu di bawah ini tidak dimasukkan ke dalam Album Soundtrack Film It (2017), namun ditampilkan dalam film tersebut:
1. The Cult - Love Removal Machine
2. New Kids on the Block - You Got It (The Right Stuff)
3. New Kids on the Block - Please Don't Go Girl
4. Anvil - 666
5. Young MC - Bust A Move
6. New Kids on the Block - Hangin' Tough
7. The Cure - Six Different Ways
8. Anthrax - Antisocial
9. XTC - Dear God