She often performed in Church choirs in her twenties and in the 1990s Morris moved to Darwin, Northern Territory to find her Indigenous family.
She completed a Certificate 3 in Contemporary music at N.T.U in Darwin and then began working with producer/ musician/ songwriter Glen Heald for the next ten years who produced the albums Shellie Morris and Waiting Road.
In 2010 Shellie performed her song "Swept Away" at the opening of the Winter Olympics in Vancouver with the Black Arm Band.
In 2011 Morris sang alongside the international music stars Sinéad O'Connor, John Cale, Meshell Ndegeocello, Rickie Lee Jones and aboriginal singer Gurrumul Yunupingu for the show 7 Songs to Leave Behind.
Morris utilized her renowned career in music to help raise awareness for the Fred Hollows Foundation, becoming one of their distinguished ambassadors.
[21] The Fred Hollows Foundation is an international non-profit organization that educates surgeons on how to cure avoidable blindness within underserved communities and countries.