robertjerman you can find a great documentary on Kate on youtube. She is most definitely an original. Most singer/songwriters sing about their experiences (Joni Mitchell). Kate sings about what she imagines so she becomes a singing fetus in the womb or a Russian babushka or lost at sea. Most don't know this but Dave Gilmour (Pink Floyd) discovered her.
He played a solo version of The Man With the Child in his Eyes for EMI and they put her under contract at the age of 16.