| Official |
|---|
| 1.3 | Forever Blue | 4:19 | Swing Out Sister | Kaleidoscope World | Swing Out Sister | Album | | Fontana | PPD-1009 |
| 1.3 | Forever Blue | 4:19 | Swing Out Sister | Kaleidoscope World | Swing Out Sister | Album | | Fontana | 838 293-2 |
| 1.3 | Forever Blue | 4:19 | Swing Out Sister | Kaleidoscope World | Swing Out Sister | Album | | Phonogram, Fontana | 838 293-2 |
| 1.3 | Forever Blue | 4:19 | Swing Out Sister | Kaleidoscope World | Swing Out Sister | Album | | Fontana | 838 293-2 |
| 2.3 | Forever Blue | 4:19 | Swing Out Sister | Splendid Collection | Swing Out Sister | Album + Compilation | | Fontana | PHCR-3161, PHCR-3162, PHCR-3163, PHCR-3164 |
| 1.15 | Forever Blue | 4:20 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | PHCR-1410 |
| 1.15 | Forever Blue | 4:18 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Fontana | 532471-2 |
| 1.16 | Forever Blue | 4:17 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | PHCR-1460 |
| 1.16 | Forever Blue | 4:17 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Fontana | 522 619-2 |
| 1.16 | Forever Blue | 4:17 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | PHCR-1460 |
| 1.6 | Forever Blue | 4:19 | Swing Out Sister | 20th Century Masters: The Millennium Collection: The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | 314 586 425-2 |
| 1.13 | Forever Blue | 4:22 | Swing Out Sister | Smooth Jazz Classics Collection | Various Artists | Album + Compilation | | MCA Music Inc. | 07314 556484-2 |
| 1.16 | Forever Blue | 4:17 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | UICY-2559 |
| 1.8 | Forever Blue | 4:19 | Swing Out Sister | The Ultimate Collection | Swing Out Sister | Album + Compilation | | Universal | CCM 981 258-6 |
| 1.8 | Forever Blue | 4:19 | Swing Out Sister | The Ultimate Collection | Swing Out Sister | Album + Compilation | | Universal | |
| 1.8 | Forever Blue | 4:18 | Swing Out Sister | The Ultimate Collection | Swing Out Sister | Album + Compilation | | MCA Music Inc. | 06024982615-0 |
| 1.16 | Forever Blue | 4:17 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | UICY-6028 |
| 1.16 | Forever Blue | 4:17 | Swing Out Sister | The Best of Swing Out Sister | Swing Out Sister | Album + Compilation | | Mercury Records | UICY-6028, UICY-90724 |
| 1.3 | Forever Blue | 4:19 | Swing Out Sister | Kaleidoscope World | Swing Out Sister | Album | | Mercury Records | UICY-94427 |
| 2.3 | Forever Blue | 4:18 | Swing Out Sister | Blue Mood, Breakout & Beyond | Swing Out Sister | Album + Compilation | | Cherry Pop | CRPOPBOX259 |
| Promotion |
|---|
| 1.3 | Forever Blue | 4:15 | Swing Out Sister | Excerpts From ‘Kaleidoscope World’ | Swing Out Sister | EP | | Fontana | SOCDS 1 |