| performed |
|---|
| Irresistable (Mouthwatering mix) | | guest | Superchumbo | 6:53 |
| Live for Today (Gospel) | | | Cicero with Sylvia Mason-James | 2:47 |
| Live for Today (orchestral) | | | Cicero with Sylvia Mason-James | 4:04 |
| Metamorphosis | | | Pet Shop Boys | 4:04 |
| The Revolution (Volta vocal mix) | | guest | Superchumbo | 6:09 |
| vocals |
|---|
| 1992-12 | Am I the Same Girl | | background vocals | Swing Out Sister | 6:23 |
| 1992-12 | Breakout | | background vocals | Swing Out Sister | 8:07 |
| 1992-12 | Circulate | | background vocals | Swing Out Sister | 8:53 |
| 1992-12 | Everyday Crime | | background vocals | Swing Out Sister | 6:46 |
| 1992-12 | Get in Touch With Yourself | | background vocals | Swing Out Sister | 7:48 |
| 1992-12 | Notgonnachange | | background vocals | Swing Out Sister | 7:39 |
| 1992-12 | Surrender | | background vocals | Swing Out Sister | 6:06 |
| 1992-12 | Twilight World | | background vocals | Swing Out Sister | 6:35 |
| 1992-12 | Who Let the Love Out / Expansions / Coney Island Man / Wives & Lovers | | background vocals | Swing Out Sister | 10:32 |
| 1992-12 | You on My Mind | | background vocals | Swing Out Sister | 4:47 |
| 1997-06 | Somewhere (Documentary) | | background vocals and spoken vocals | Pet Shop Boys | 24:34 |
| 1997-06 | Yesterday, When I Was Mad | | background vocals | Pet Shop Boys | 4:01 |
| 1000 Years From Today | | background vocals | The Beloved | 5:19 |
| Absolute E-Sensual (FKB edit) | | background vocals [backing vocals] | Jaki Graham | 4:16 |
| Absolute E-Sensual (FKB extended mix) | | background vocals [backing vocals] | Jaki Graham | 5:35 |
| Absolute E-Sensual (Sleasesisters Gay and Happy Vibe) | | background vocals [backing vocals] | Jaki Graham | 8:02 |
| Absolute E-Sensual (US House mix) | | background vocals [backing vocals] | Jaki Graham | 6:33 |
| Absolute E-Sensual (US Old Skool club mix) | | background vocals [backing vocals] | Jaki Graham | 5:32 |
| Ain’t That a Shame | | background vocals | Marla Glen | 7:16 |
| All My Love | Sylvia Mason | background vocals [backing vocals] | George Ezra | 2:41 |
| Also Love You | | background vocals | Marla Glen | 4:50 |
| Bad Cover Version | | background vocals [backing vocals] | Pulp | 4:17 |
| Bad Cover Version (video mix) | Sylvia James | background vocals [backing vocals] | Pulp | 3:58 |
| Be With You | Sylvia Mason James | background vocals | Enrique Iglesias | 3:40 |
| Break Free | | background vocals | Marla Glen | 5:28 |
| Celebrate Your Life | | background vocals | The Beloved | 5:33 |
| Celebrate Your Life | | additional and other vocals | The Beloved | 5:33 |
| City Love | | background vocals | Marla Glen | 4:08 |
| Country Girl | | background vocals | Primal Scream | 4:33 |
| Da’ale Da’ale | Sylvia Mason | background vocals [backing vocals] | Ofra Haza | 3:25 |
| Everything (Mentor club lite mix) | Sylvia Mason James | background vocals [backing vocals] | Sarah Washington | 8:43 |
| Feeling Good About It | | background vocals | This Way Up | 3:35 |
| Flying Back South | | lead vocals | This Way Up | 4:36 |
| Flying Back South | | background vocals | This Way Up | 4:36 |
| Forever Texas | | background vocals | Robbie Williams | 3:38 |
| Go West / Postscript | | additional | Pet Shop Boys | 8:21 |
| Happiness Is an Option | | additional | Pet Shop Boys | 3:48 |
| I Breathe Again | Sylvia Mason James | background vocals | Adam Rickitt | 3:44 |
| I Breathe Again | Sylvia Mason James | background vocals | Adam Rickitt | 3:50 |
| I Have Always Loved You | Sylvia Mason James | background vocals | Enrique Iglesias | 4:25 |
| I See Hope in the Morning Light | | background vocals | Midge Ure | 5:42 |
| I Will | | background vocals | This Way Up | 3:50 |
| If I Can't Have You | | background vocals | This Way Up | 3:14 |
| In the Night (1995) | | additional | Pet Shop Boys | 4:18 |
| Irresistible! (Greg's Oh So Irresistible remix) | | | Superchumbo | 5:34 |
| Kids | | background vocals | Robbie Williams & Kylie Minogue | 4:47 |
| Lets Go the Reins | | background vocals | This Way Up | 3:51 |
| Little Death | | background vocals | Primal Scream | 6:24 |
| Louise | | background vocals | This Way Up | 4:38 |
| Love & Respect | | background vocals | Marla Glen | 4:47 |
| Lover | | background vocals | Sophie Ellis‐Bextor | 3:26 |
| Nitty Gritty | | background vocals | Primal Scream | 3:40 |
| One and One Make Five | | additional | Pet Shop Boys | 3:31 |
| One in a Million | | additional | Pet Shop Boys | 3:54 |
| Other Plans | | background vocals | Marla Glen | 4:45 |
| Paradise Found | | background vocals | The Beloved | 7:18 |
| Proper CrimBO! (a cappella) | Sylvia Mason | additional | Bo’ Selecta! | 2:00 |
| Proper CrimBO! (a cappella) | Sylvia Mason | additional | Bo’ Selecta! | 3:36 |
| Proper CrimBO! (Making of the video) / Proper CrimBO! (video) | | additional | Bo’ Selecta! | 14:57 |
| Proper CrimBO! (single version) | Sylvia Mason | additional | Bo’ Selecta! | 3:36 |
| Rhythm Divine | Sylvia Mason James | background vocals | Enrique Iglesias | 3:30 |
| Ritmo total (Rhythm Divine) | Sylvia Mason James | background vocals | Enrique Iglesias | 3:29 |
| Rock DJ | | background vocals | Robbie Williams | 4:17 |
| Shake Baby Shake | | background vocals | This Way Up | 3:27 |
| So Alive | | background vocals and guest | Love and Rockets | 4:15 |
| Sometimes I Feel So Lonely | | background vocals | Primal Scream | 5:07 |
| Spirit | | background vocals | The Beloved | 4:46 |
| Strong Enough | Sylvia Mason James | background vocals [backing vocals] | Cher | 3:44 |
| Strong Enough (Club 69 Future Anthem short mix edit) | | background vocals | Cher | 7:52 |
| Strong Enough (Club 69 Phunk mix) | | background vocals | Cher | 8:34 |
| Strong Enough (D‐Bop’s Melt mix) | | background vocals | Cher | 7:49 |
| Strong Enough (male version) | | background vocals | Cher | 3:33 |
| Strong Enough (Marc Andrews remix edit) | | background vocals | Cher | 7:32 |
| Strong Enough (Pumpin' Dolls Cashmere club mix) | | background vocals | Cher | 8:37 |
| Strong Enough (Pumpin’ Dolls radio edit) | | background vocals | Cher | 3:48 |
| Strong Enough (Pumpin’ Dolls vocal epic club) | | background vocals | Cher | 7:25 |
| Strong in Love (Disco Citizens mix) | Mason | guest | Chicane feat. Mason | 4:06 |
| Strong in Love (Disco Citizens remix) | | guest | Chicane feat. Mason | 8:07 |
| Sweet Harmony | | background vocals | The Beloved | 5:02 |
| The Theatre | | additional | Pet Shop Boys | 5:11 |
| The Truck Driver and His Mate | | additional | Pet Shop Boys | 3:34 |
| The Universe Is You | | background vocals | Sophie Ellis‐Bextor | 3:40 |
| Violence (Haçienda version) | | additional | Pet Shop Boys | 4:59 |
| What About Our Kids | | background vocals | Marla Glen | 3:46 |
| You Need Love Like I Do | | background vocals | Tom Jones with Heather Small | 3:50 |
| You’ve Got Me Thinking | | background vocals | The Beloved | 4:09 |
| vocals |
|---|
| 1997-06 | Somewhere: Pet Shop Boys in Concert | | background vocals | Pet Shop Boys | |
| Heaven's Open | | choir vocals and guest | Michael Oldfield | |
| Heaven's Open | | choir vocals and guest | Michael Oldfield | |
| Heaven’s Open | | choir vocals and guest | Michael Oldfield | |
| Heaven’s Open | | choir vocals and guest | Michael Oldfield | |
| Heaven’s Open | | choir vocals and guest | Michael Oldfield | |
