| Label: | Gee Street GEE 5000103 |
| Genre: | Hip Hop |
| Format: | CD (Maxi-Single) |
| 1 | Brain (Radio Edit) (Funky Sounds Mix) | 4:04 |
| 2 | Brain (Album) | 4:56 |
| 3 | Brain (Instrumental) | 4:58 |
| 4 | Brain (A'cappella) | 4:56 |
| Label: | Gee Street GEE 5000388 |
| Genre: | Electronic, Hip Hop |
| Style: | Drum n Bass, Hip Hop, Big Beat |
| Format: | CD (Maxi-Single) |
| 1 | Brain (Stereo MC's Remix) » Remix: Stereo MC's | 5:30 |
| 2 | Brain (Hardknox Remix) » Remix: Hardknox | 5:13 |
| 3 | Brain (Natural Born Chillers Remix) » Remix: Natural Born Chillers | 6:34 |
| 4 | Brain (Midfield General Remix) » Remix: Midfield General | 4:32 |
| Label: | Gee Street GEE 5000386 |
| Genre: | Hip Hop |
| Format: | Vinyl (12") |
| A1 | Brain (Album Version) | |
| A2 | Brain (Stereo MC's Remix) » Remix: Stereo MC's | |
| B1 | Brain (Natural Born Chillers Remix) » Remix: Natural Born Chillers | |
| B2 | Brain (Hardknox Remix) » Remix: Hardknox |
| Label: | Gee Street 63881-27500-1 |
| Genre: | Hip Hop |
| Format: | Vinyl (12") |
| A1 | Brain (Radio Edit) (Funky Sounds Mix) | 4:04 |
| A2 | Brain (Album Version) | 4:56 |
| B1 | Brain (Instrumental) | 4:56 |
| B2 | Brain (Acappella) | 4:56 |
| Label: | Gee Street GEE 5000383 |
| Genre: | Hip Hop |
| Format: | CD (Maxi-Single) |
| 1 | Brain (Radio Edit) | 4:05 |
| 2 | Brain (Album Version) | 4:59 |
| 3 | Brain (Instrumental) | 4:58 |
| 4 | Brain (Accapell'a) | 4:57 |
| 5 | Brain (Da Beatminerz Remix) » Remix: Da Beatminerz | 5:36 |
| Label: | Gee Street PR12-G97-001-1 |
| Genre: | Hip Hop |
| Format: | Vinyl (12") |
| A1 | Brain (Album) | 4:56 |
| A2 | Brain (Radio Edit) | 4:14 |
| B1 | Brain (Instrumental) | 4:55 |
| B2 | Brain (Acappella) | 4:56 |
| Label: | Gee Street GEE 5000386P |
| Genre: | Hip Hop |
| Format: | 2 Vinyl (12" , Promo) |
| A1 | Brain (Stereo MC's Remix) » Remix: Stereo MC's | |
| A2 | Brain (Album Version) | |
| B1 | Brain (Da Beatminerz Remix) » Remix: Da Beatminerz | |
| B2 | Brain (Acapella) | |
| C1 | Brain (Hardknox Remix) » Remix: Hardknox | |
| C2 | Brain (Midfield General Remix) » Remix: Midfield General | |
| D1 | Brain (Natural Born Chillers Remix) » Remix: Natural Born Chillers |
| Label: | Not On Label none |
| Genre: | Hip Hop |
| Format: | Vinyl (12" , White Label) |
| A1 | Brain (Refugee Camp Mix) Radio Edit | 3:54 |
| A2 | Brain (Refugee Camp Mix) Main | 4:10 |
| B1 | Brain (Da Beatminerz Remix) Radio Edit | 3:53 |
| B2 | Brain (Da Beatminerz Remix) Main | 5:35 |
| B3 | Brain (Refugee Camp Mix) Instrumental | 4:09 |
| Label: | Gee Street PR12-G97-002-1 |
| Genre: | Hip Hop |
| Style: | Conscious |
| Format: | Vinyl (12") |
| A1 | Brain (Album) | |
| A2 | Brain (Radio Edit) | |
| B1 | Brain (Instrumental) | |
| B2 | Brain (Acappella) |