Key - EP, The
| Composed by | Tomoaki Yamaya |
| Published by | Otome No Tomo Sha |
| Release type | Film Score - Official Release |
| Format | 1 Digital - 4 tracks |
| Release date | June 30, 2012 |
| Duration | 00:08:37 |
| Genres |
| 1 | The KeyTomoaki Yamaya | 02:10 |  |
| 2 | The Key (Piano Version)Tomoaki Yamaya | 02:09 | |
| 3 | The Key (Harp Version)Tomoaki Yamaya | 02:09 | |
| 4 | The Key (The First Edition)Tomoaki Yamaya | 02:09 |
