| Label: | Polydor 579071-2 |
| Genre: | Electronic, Pop |
| Style: | Europop, Euro House |
| Format: | CD (Maxi-Single) |
| 1 | Key To My Life (Radio Edit) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:47 |
| 2 | Key To My Life (Unlocked Mix) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:53 |
| 3 | When Will You Understand » Written-By: Brannigan, Hedges, Keating | 3:47 |
| 4 | Boyzone, Spoken Word | 1:10 |
| Label: | Polydor 579070-2 |
| Genre: | Electronic, Pop |
| Style: | Europop, Vocal |
| Format: | CD (Single) |
| 1 | Key To My Life (Radio Edit) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:46 |
| 2 | Key To My Life (Unlocked Mix) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:49 |
| Label: | Polydor PO342 |
| Genre: | Electronic, Pop |
| Style: | Europop, Euro House |
| Format: | Vinyl (7") |
| A | Key To My Life (Radio Edit) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:47 |
| B | Love Me For A Reason | 1:10 |
| Label: | Polydor 851895-2 |
| Genre: | Electronic, Pop |
| Style: | Euro House, Europop |
| Format: | CD (Single) |
| 1 | Key To My Life (Radio Edit) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:47 |
| 2 | Key To My Life (Unlocked Mix) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:53 |
| 3 | When Will You Understand » Written-By: Brannigan, Hedges, Keating | 3:47 |
| Label: | Polydor POCP-7068 |
| Genre: | Electronic, Pop |
| Style: | Europop, Euro House |
| Format: | CD (Maxi-Single) |
| 1 | Key To My Life (Radio Edit) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:47 |
| 2 | Key To My Life (Unlocked Mix) » Written-By: Brannigan, Graham, Hedges, Keating, Gately | 3:53 |
| 3 | When Will You Understand » Written-By: Brannigan, Hedges, Keating | 3:47 |
| 4 | Boyzone, Spoken Word | 1:10 |