Now you can put a face to the voice; Music.
MIM Grey may not be a name that's immediately recognised but you'll almost certainly be familiar with her voice.
The Barnet-born singer, who plays Worcester's Huntingdon Hall tomorrow, has performed with the likes of Paul McCartney, Dave Stewart, Michael Ball and ABC and had chart hits with Mantronix and Lee Cabrera.
She found an even wider audience when her version of What A Difference A Day Makes spearheaded Thomas Cook's Christmas ad campaign.
But it's as a solo artist that she aims to make her mark, with her new album, Grey Matters, showcasing her sultry mix of country, soul and radio-friendly Americana.
It has not been an easy journey for Mim, however.
Shortly after leaving school her parent's marriage crumbled and she moved in with musician brothers Paul and John Williams.
The housemates enjoyed making music into the small hours, turning the house into a 24/7 party. Mim was encouraged to sing professionally by Paul after he discovered a tape she'd secretly recorded.
The two became an item but just as Mim's career began to take off Paul was diagnosed with pancreatic cancer. He died six months later.
''It was the worst moment of my life,'' she recalls. ''I lost the plot for a while. I got involved with drink and drugs and my career suffered.'' Fate intervened, however, when she met songwriter Cori Josias during a transatlantic flight. They got chatting and vowed to work on some songs together.
With the songwriting sorted Mim started singing at weddings to pay the bills.
At one of the gigs she met drummer Steve Vinter who she immediately felt a connection with. He encouraged her singer/songwriting and urged her to continue with what would become Grey Matters with Cori.
''Without Steve I wouldn't be here today,'' Mim claims.
Record company executives spotted Mim performing at London's 606 Club and whisked her to Los Angeles to work with top producer Derek Bramble. The tracks were mastered by Gavin Lurssen of Robert Plant and Alison Krauss fame and engineered by Grammy-nominated Rob Chiarelli.
Mim has paid her dues and now she's reaping the rewards.
TicketInfo MIM GREY Tomorrow: Huntingdon Hall, Worcester Tickets: 01905 611427
Making her mark: Mim Grey has recorded with top stars and on TV ads.