| 1 | Janet* – | I.d. | 0:47 | |
| 2 | Janet* – | Feedback | 3:38 | |
| 3 | Janet* – | Luv | 3:10 | |
| 4 | Janet* – | Spinnin | 0:08 | |
| 5 | Janet* – | RollerCoaster | 3:51 | |
| 6 | Janet* – | Bathroom Break | 0:40 | |
| 7 | Janet* – | Rock With U | 3:52 | |
| 8 | Janet* – | 2Nite | 4:09 | |
| 9 | Janet* – | Can't B Good | 4:13 | |
| 10 | Janet* – | 4 Words | 0:11 | |
| 11 | Janet* – |
Never Letchu Go
Guitar – Ernie Isley |
4:07 | |
| 12 | Janet* – | Truth Or Dare | 0:24 | |
| 13 | Janet* – | Greatest X | 4:23 | |
| 14 | Janet* – | Good Morning Janet | 0:44 | |
| 15 | Janet* – | So Much Betta | 2:53 | |
| 16 | Janet* – | Play Selection | 0:17 | |
| 17 | Janet* Feat. Missy Elliott – |
The 1
Guitar – Ernie Isley Vocals – Missy Elliott |
3:41 | |
| 18 | Janet* – | What's Ur Name | 2:34 | |
| 19 | Janet* – | The Meaning | 1:16 | |
| 20 | Janet* – | Discipline | 5:00 | |
| 21 | Janet* – | Back | 0:18 | |
| 22 | Janet* – | Curtains | 3:50 | |
| 23 | Janet* – | Let Me Know | 3:48 |
Track 23 is a bonus track.
| Title, Format | Label | Cat# | Country | Year | ||
|---|---|---|---|---|---|---|
| Discipline (CD, Album, Sup) | Island Records | 602517613553 | Europe | 2008 | ||
| Discipline (Special Edition) (CD, Album) | Island Def Jam Music Group, Universal Music Australia | 1762969 | Australia | 2008 | ||
| Discipline (Deluxe Limited Edition) (CD, Album + DVD-V, NTSC) | Island Def Jam Music Group | 176 216-4 | Taiwan | 2008 | ||
| Discipline (Deluxe Limited Edition) (CD, Album, Ltd + DVD-V, NTSC) | Island Def Jam Music Group | 602517621640 | Europe | 2008 | ||
| Discipline (Deluxe Limited Edition) (CD, Album + DVD-V, NTSC) | Island Def Jam Music Group | 1762972 | Australia | 2008 |