Tracks
| # | Title | Sung by | |
|---|---|---|---|
| 1 | Harden Up (radio edit) | Nicolette | 3:28 |
| 2 | Harden Up (Skitz radio edit) | Nicolette | 4:00 |
| 3 | Harden Up (Jelly's Bad Mood edit) | Nicolette | 3:29 |
| 4 | Harden Up (Skitz Clubb remix) | Nicolette | 8:10 |
| 5 | Harden Up (Jelly's Bad Mood mix) | Nicolette | 5:56 |
| 6 | Harden Up (Jelly vs. Sample Gee club mix) | Nicolette | 6:39 |
| 7 | Amazon | Nicolette | 4:21 |
Source: MusicBrainz release group 4783427a-edae-3f0f-86cb-eac1db1ce7d2 (CC0). Cover: Cover Art Archive.