Appears on releases
| # | Title | Length | Track Artist | Release Title | Release Artist | Release Group Type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.4 | ふたりのバースディ (カラオケ) | 4:14 | 園崎魅音（雪野五月）、園崎詩音（雪野五月） | ひぐらしのなく頃に キャラクターCD Vol.2 | 園崎魅音（雪野五月）、雪野五月、園崎詩音（雪野五月） | Soundtrack |
| Frontier Works | FCCM-0178 |
| Pseudo-Release | |||||||||
| 1.4 | Futari no Birthday (karaoke) | 4:14 | Satsuki Yukino | Higurashi no Naku Koro ni Character CD Vol.2 | Various Artists | Soundtrack |
| Frontier Works | FCCM-0178 |