Born Katherine Farthing, she is most famous for her duo vocal group with her brother Gerald Farthing in the first seventies (named Mac and Katie Kissoon). They recorded some famous hit singles, their genre was easy listening, bubblegum pop. After this Katie became famous and requested as backup vocals, among her collaborations Van Morrison, Eric Clapton, Roger Waters, Elton John, Eros Ramazzotti, George Harrison, Pet Shop Boys, Robbie Williams.