| Label: | Funkin' Marvellous Records MARVC 7 |
| Genre: | Electronic, Funk / Soul |
| Style: | Funk |
| Format: | Cassette (Single , Single Sided) |
| A1 | Sweetheart (Radio Mix) | 3:37 |
| A | Sweetheart (The Miami Mix) | 5:43 |
| B1 | U + Me (The Einstein Song) (Radio Mix) » Producer: Westside Boys, The | 3:34 |
| B2 | U + Me (The Einstein Song) (Special New York Dance Mix) » Producer: Westside Boys, The » Remix: Mark Berry | 6:13 |
| Label: | Funkin' Marvellous Records 12 MARV 07 |
| Genre: | Electronic, Funk / Soul |
| Style: | Funk |
| Format: | Vinyl (12") |
| A | Sweetheart (The Miami Mix) » Producer: Mark Hargreaves, Mick Parker | 5:39 |
| B1 | U + Me (The Einstein Song) (Ext. Club Version) » Producer: Mark Hargreaves, Mick Parker » Remix: Mark S. Berry | 6:16 |
| B2 | Love This Way (Ext. Club Version) » Producer: Mark S. Berry | 6:36 |