I did a telephone interview with Poly Styrene last year; alas, there was so much electronic interference between the iPhone and my dictaphone that it's almost unbearable to listen to.
She sang part of the first song I believe she ever wrote, which was a protest song about one of the dinner ladies at her school.
Poly, being a vegetarian, didn't like her because she was told she had to eat meat. She took her meat home hidden in a handkerchief and wrote the song to teach to the other children:
'Old Mother Johnson, wagging her finger, who does she think she is!'