"The Queen of studio and backing vocals".

You may not know Mary's name but you will certainly have heard her powerful, soulful vocals which have appeared on the cream of the Jazz, Soul, R&B and Pop world, including the likes of Lionel Richie, Grace Jones, Chaka Khan, Courtney Pine, Mica Paris, Beverley Knight, Culture Club, Marcella Detroit, Donna Summer and Roy Ayers.