--- Openings ---
- Title: Tegami Bachi OP01 Single - Hajimari no Hi
Artist: Suga Shikao feat. Mummy-D
- 1. Hajimari no Hi feat. Mummy-D
2. Oretachi Funk Fire
3. Neko-san
- Title: Tegami Bachi OP02 Single - Love Letter no Kawari ni Kono Shi wo.
Artist: Seira
- 1. Love Letter no Kawari ni Kono Shi wo.
2. Little By Little
3. Utsukushiku Moeru Mori
--- Endings ---
- Title: Tegami Bachi ED01 Single - Hatenaki Michi
Artist: HIMEKA
- 1. Hatenaki Michi
2. Sora wa Oshiete Kureru
3. Hatenaki Michi ~Instrumental~
4. Sora wa Oshiete Kureru ~Instrumental~
5. Hatenaki Michi ~Anime Edit~
- Title: Tegami Bachi ED02 Single - Hikari no Kioku
Artist: Angelo
- 1. Hikari no Kioku
2. Last Song
3. RAINBOW
--- OSTs ---
- Title: Tegami Bachi Soundtrack
- 1. Canon of AMBER GROUND
2. LETTER BEE
3. Tsuioku no Aria ~ Recollections
4. Niche & Steak
5. Connor Culh
6. Pico-Pico
7. White Desert of Jose
8. Lag & Niche
9. Seirei Kohaku
10. Prayer Hill
11. Tears of Silver
12. Tsuioku no Aria ~ Recollections (Harpsicord version)
13. Lightning
14. Heavy-Metal Enemy (Shuugeki Gaichuu)
15. Town of Kyrie ~ Dead End
16. MA-KA
17. YODAKA
18. Boushitsu ~ Goos & Noir
19. Attack
20. Shoot Down!
21. Nocturne ~ a Destiny
22. Canon of AMBER GROUND (Full version)
23. LETTER BEE ~ Strings Harpsicord version
Link OP/ED/OST