Not long after her Idol success in 2003, Cosima celebrated her debut CD release with a memorable version of the Cold Chisel classic When The War Is Over . Entering the chart at number one she made history as the first independent artist to achieve that status in Australia. The single was certified gold on debut, quickly growing beyond platinum in the weeks that followed. Cosima received two Aria awards for her single.
Following on from her triumphant single debut, Cosima released her first, self titled album in 2004, recorded with world renowned singer, songwriter & producer Diane Warren (Celine Dion, Toni Braxton,& many more) by invitation. The album entered the chart at number two and achieved gold status on release, selling over 45,000 copies.
In 2004 Cosima went on to perform on channel 7’s hit show “Dancing with the Stars”. At the request of former Prime Minister John Howard Cosima was invited to perform at Mr Howards 30 year anniversary in Parliament Gala dinner. Cosima was invited by invitation to perform at the Dream Foundation’s Annual Gala dinner in LA where she performed Diane Warren’s, (patron) hit, Because You Loved Me”. She was voted Best New Artist for Pop Republic Magazine, and she performed at channel 7’s Carols by Candlelight.