Micky Green was born as Michaela Maree Gehrmann on 28 June 1984 and grew up in Sydney. She has both Dutch and German ancestry. Her father, Marc David Gehrmann (born 1960) and mother, Alice June Schüssler (born 1 June 1959), a teacher, were married in 1981. Green has an older sister, Anneke Naomi, after her parents separated in 1993, they were raised by their mother.According to Green "I started singing very young with my father who played the guitar. Then I started playing drums when I was 11, and the piano when I was 14. I started writing around the same time".Green played drums in a jazz and rock band at her secondary school, Asquith Girls High School,and graduated from year 12 in 2001. As a teenager, she was writing songs – one of her first efforts was about a tissue box. She keeps a notebook and has mostly written in airports and hotel rooms.Her first demos were recorded on her computer.To beat out the time, she used the sound of a pen on the table, a box, or her leg.