A transgender caretaker at a Wellington school has been using her musical talents to brighten up the kids' days.

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Molly Mason was born as Michael, but soon discovered she was a female born in a man's body.

"I believe I'm a woman, and I associate as a woman, so I live my life as a woman," Molly told TVNZ1's Seven Sharp.

Molly has a love of music that began when she was just six.

Now, in her role as caretaker at a Wellington school, she uses her talent to good effect by beat boxing with the kids at lunchtime.

"When I realised that beat boxing and making sounds was something I couldn't live without, that was it, nothing else mattered."

However, to be this woman - that little boy Michael, had a fight on his hands.

"I got bullied from primary school right through until the day I left college and left Blenheim."

Molly is now proud to be transgender and says the stage is her safe place. She performs as her drag alter ego called Bette Noir.