Tracklist
| S-side | ||
| A1 | Happy (Album Version) | 5:07 |
| A2 | Happy (Towa's Mental) | 4:43 |
| A3 | Happy (Happy-Pella) | 3:14 |
| M-side | ||
| B1 | Happy (Frankti-fied Club) | 9:56 |
| B2 | Happy (Morning Happiness) | 6:42 |
Notes
Taken from the album "Sound Museum"
| S-side | ||
| A1 | Happy (Album Version) | 5:07 |
| A2 | Happy (Towa's Mental) | 4:43 |
| A3 | Happy (Happy-Pella) | 3:14 |
| M-side | ||
| B1 | Happy (Frankti-fied Club) | 9:56 |
| B2 | Happy (Morning Happiness) | 6:42 |