Australian alternative pop singer Kate Miller-Heidke has parted ways with her manager Leanne de Souza and joined Bill Cullen's camp at One Louder Entertainment.

De Souza, who helms Brisbane-based artist management and artist support service Buzz Office, has been the architect of the successful early stages of Miller-Heidke's career. The singer's first album, "Little Eve," earned four nominations at the ARIA Awards in 2007, and set up the artist as one of the country's brightest newcomers.

Her sophomore Sony set "Curiouser" was recorded in L.A. with producer Mickey Petralia and bowed at No. 8 on the ARIA Top 50 Albums chart this October, outpacing the No. 11 peak of its predecessor.

Sydney-based Cullen, a respected talent manager who guides the careers of Paul Kelly, Sarah Blasko, the Drones and End of Fashion, believes his ward has a sound which should cross borders. "We're looking at getting Kate overseas in May," he tells Billboard.biz.

Brisbane-based Miller-Heidke hasn't ruled out a move interstate. Or even a wholesale relocation abroad. "I'm dabbling with the idea of moving to Melbourne," she tells Billboard.biz. "I'd love to live in LA after being there a few months, and we've [Miller-Heidke and her husband and collaborator Keir Nuttall] talked about moving to Berlin as well."