Cassie Maree Davis was born in Gnangara, Western Australia. Her dad, who is a Pastor, always encouraged her interest in music. When she was eight-years-old, her parents gave her a guitar. She taught herself to play and began to write songs.
Davis recorded her first songs on her home computer at age twelve. In 1999 she did work experience at a local recording studio for three years and learned how to use mics, song arranging, basic producing and how to make quality recordings. Davis then enrolled at the Western Australian Academy of Performing Arts (WAAPA), where she studied sound engineering and production.
In 2003 she travelled to the United States, accompanied by her elder sister, Emma, who handles the business side of their label, 12 Stones. The Davis sisters began traveling between Australia and New York in 2003, songwriting and knocking on doors.
Davis landed a worldwide four album deal with Sony BMG through her label 12 Stones. Her debut release was the single "Like It Loud" which reached #11 on the ARIA singles chart. Davis performed "Like It Loud" on Week 2: Top 18 Results episode of So You Think You Can Dance Australia backed by her band and 50 dancers.
In support of her single "Like It Loud," Davis joined forces with Australian clothing label Supre to create a limited edition T-shirt. Cathy Van Der Meulen said "Cassie is such an exciting new talent and represents everything our brand stands for in an Australian girl...fun, fashionable and forward thinking. Cassie is going to be an Australian icon not unlike Supre."
Cassie's second single "Differently" was released in Australia in April 2009. The music video features Travis McCoy, Printz Board and Fish from Fishbone. The third single, "Do it Again," was released the following August, and her debut album, also called Differently followed soon after. The song "Differently" was certified Gold in September 2009.
Davis wrote and recorded the majority of her album independently. She also worked with producer Printz Board, producer Rodney Jerkins and songwriter/producer Wayne Wilkins who has already brought her in to work on a number of writing and production projects. In addition to the bocals. Cassie also played the guitar, piano, keyboard and sampler, on her debut album.
Cassie Davis also wrote and appears on Warren G's 2009 album The G Files, with Snoop Dogg on the track "Swagger Rich" which appeared on the final season of Ugly Betty.
Cassie is currently the ambassador for Camp Quality and their new program for high school students "The Teenage Alchemist" which is the children's family cancer charity that believes in bring optimism and happiness to the lives of children and families affected by cancer through fun therapy.
In Early 2010, Cassie wrote a single titled, "Choose You" for Stan Walker's, second studio album, From the Inside Out and was released as the second single.
In 2011, Cassie started a production group with fellow writer/producer Snob Scrilla. Together, they wrote and produced Havana Brown's debut single "We Run The Night." The song was released in late April, and was the first Australian track to debut in the top 10 in 2011.
She counts Black Eyed Peas singer Fergie as a fan. According to the Sydney Morning Herald, the singer received a phone call from Fergie who told Cassie her ballad “Amazing” had made her cry.
Cassie's live band members include her brother Joseph Davis on guitar, David Okulicz on bass/keys, Mitch Bruzzese on drums and Luke Moseley on guitar/bass.