Sylvia Mason-James is a British singer who has worked extensively as a backing vocalist and solo artist.
She duetted with Jimmy Nail on his chart-topping single "Ain't No Doubt" in 1992 and appeared as the vocalist on Chicane's "Strong in Love" in 1998 (Chicane featuring Mason). She has also released a solo single with a cover version of the Diana Ross song "Touch Me In The Morning". Recently, she appeared as vocalist on two songs from Superchumbo's Wowie Zowie album.
Sylvia also sung on Scott and Leon's "Shine On", "Sounds of Eden" and "You Used To Hold Me". She has appeared as a backing vocalist on music by artists including Robbie Williams, Cher, Bo Selecta and Pet Shop Boys. She has also toured extensively with Pet Shop Boys, including 1991' "Performance" tour, "Discovery" tour, "Somewhere" tour, Nightlife tour,Live 8 Moscow in 2005, 2006' Fundamental tour and performed on many of their other public performances. As backing vocalist she is represented on many of PSB' albums and records (Very: "Go west", "The theatre", "One and one make five", "One in milion"; "Nightlife": "Happines is the option").

Pam was born in Auckland, New Zealand, the youngest of three children. The premature loss of her father in her mid teens saw Pam arriving in England in the mid Eighties to join her brother and sister.   Managing to procure an evening residency playing in a covers band her musical career was off to a start.   She established herself in the ‘gigging scene’ for a few years before gradually finding herself doing more and more session work with acts such as William Orbit, Tom Jones, Right Said Fred, Jimmy Nail,Paul Young and The Sisters of Mercy, In 1992 Pam auditioned for the “Performance” tour with the Pet Shop Boys and found herself on a world tour.
“The Pet Shop Boys tour  was a real defining moment of my career as I realised there was no longevity in being a back up singer and I couldn’t see myself  doing that for many more years. I had the time of my life on that tour and as we were performing to huge audiences it gave me a big confidence boost. I decided that I wanted to get into song writing seriously as I had only really dabbled in writing before and my friend Sylvia Mason-James who was touring with me, introduced me to  a guy called Nigel Rush who  was setting up a publishing company and was looking for artists and writers.  We set up a meeting and I played some of my songs to him and we’ve been working together ever since that day."
Alongside the writing, further backing vocal work continued with Darryl Hall, Mike and the Mechanics, Louise, Boyzone, Geri Halliwell, Cyndi Lauper and Elton John, and Celine Dion, with Pam singing back up vocals on Celine’s UK No.1 Hit “Think Twice”.
Nawdays she works partly in UK and partly in USA with artist like Christina Aguilera (Genie in a bottle), Dream, Billie, Sheena Easton, Myra, Tina Arena, and Jessica Simpson (Irresistible).

Tessa Niles is an English musician who began her professional singing career, as both a lead and a backing vocalist, in 1979. Tessa Niles is married to Richard Niles (who composed few PSB' tracks).
At various times in her career she has worked with a wide variety of artists including Eric Clapton, The Rolling Stones, Annie Lennox, Duran Duran, Kylie Minogue, David Bowie, The Police, Take That, Grace Jones, Tina Turner, Paul McCartney, Tom Jones, Victoria Beckham, Mike & The Mechanics, Zucchero, Status Quo, Robbie Williams, Cher and many more.
Niles has also enjoyed success voicing and singing commercials. These include Barbie, Levi's, Cadillac, Diet Pepsi, Delta Air Lines, Aquafresh, Kentucky Fried Chicken and DHL.
As favourite vocalist of Trevor Horn productions, she started sing backing vocals in Pet Shop Boys' records in 1989. It began with "It's Alright" song and it continues throw "DJ Culture", "Was It Worth It?", "Where the streets..." till recent album "Fundamental" ("I'm With Stupid").

Ms. Barbara Tucker was raised in full energy in good old Brooklyn, New York. Raised in the church and still attending is where Ms. Tucker found her love for singing, as well as having a little help from her entertainer Father Jayotis Washington of the well-known group The Persuasions. As an actress, Ms. Tucker has performed in various off-Broadway plays which allowed her to receive the "T.O.R." award through the American Theater for actors for most promising actress with distinguishing artiste. As a dancer, Ms. Tucker has choreographed and danced for various dance artist such as C&C, Soul System, Jay Williams, Dee-Lite and that's just to name a few. Ms. Tucker also had the pleasure of choreographing the First Club Music Award Show and is presently choreographer for The Underground Network Dancers.
As a vocalist, she has recorded and had the pleasure of doing background vocals from Dee-Lite to George Clinton. She has had many underground tunes such as "Set It Off", "Black Deliah Dee", "Open Your Heart", and was featured on "Unity". Currently she's signed to the fab production team Masters At Work - Little Louie Vega & Kenny "Dope" Gonzalez with her classic tunes "Deep Inside", "Beautiful People", "I Get Lifted", "Stay Together" and the more current "Stop Playing With My Mind". From Harlequin 4 to her solo career she continues to sing till she drops.
For the Pet Shop Boys she sang backing vocals on two track from album "Bilingual" (A Red Letter Day and Before).