Devil Inside是宇多田光以Utada名义发行的第二张英语单曲，也是宇多田光以Utada的名义发行的第一张实体英语单曲，于2004年9月14日发行。Devil Inside一曲取得了美国Billboard舞曲榜周冠军，而在西方舞厅也常可听到这首曲子，这单曲算是一成功之作，但并未引起太大的关注以及目光。
| Promo Version |
|---|
|
| 1. | Devil Inside (Original Version) | 3:58 |
| 2. | Devil Inside (Richard Vission Radio Edit) | 3:02 |
| 3. | Devil Inside (The Scumfrog Radio Edit) | 4:03 |
| 4. | Devil Inside (The Scumfrog Mix Show Edit) | |
| 5. | Devil Inside (The Richard Vission Experience) | 7:17 |
| 6. | Devil Inside (The Richard Vission Duberience) | 6:01 |
| 7. | Devil Inside (The Scum Frog Vocal Mix) | 8:02 |
| 8. | Devil Inside (The Scum Frog Dub) | 6:41 |
| CD Version |
|---|
|
| 1. | Devil Inside (Album Version) | 3:58 |
| 2. | Devil Inside (RJD2 Remix) | 4:07 |
| 3. | Devil Inside (Richard Vission Radio Edit) | 3:02 |
| 4. | Devil Inside (The Scumfrog Radio Edit) | 4:03 |
| 5. | Devil Inside (Richard Vission Experience) | 7:17 |
| 6. | Devil Inside (Richard Vission Duberience) | 6:01 |
| 7. | Devil Inside (The Scum Frog Vocal Mix) | 7:14 |
| 8. | Devil Inside (The Scum Frog Dub) | 6:41 |
| Vinyl Version (Side A) |
|---|
|
| 1. | Devil Inside (Richard "Humpty" Vission Vocal Remix) | 8:00 |
| Vinyl Version (Side B) |
|---|
|
| 1. | Devil Inside (The Scum Frog Vocal Mix) | 7:14 |
| Vinyl Version (Side C) |
|---|
|
| 1. | Devil Inside (Original Version) | 3:58 |
| 2. | Devil Inside (RJD2 Remix) | 4:07 |
| 3. | Wonder 'Bout | 3:48 |
| Vinyl Version (Side D) |
|---|
|
| 1. | Devil Inside (Richard "Humpty" Vission Dub) | 6:10 |
| 2. | Devil Inside (The Scum Frog Dub) | 6:41 |
