In 1985, she moved to London, England where she was signed to EMI and had a fairly successful solo career in pop music, where she released a number of singles: "Young Hearts", "Big Wednesday" and "Dry Your Eyes".

The band met with success in their native Australia, releasing two albums, touring with Van Halen, and winning various awards before permanently disbanding in 1996.

In 1994 DeMarchi collaborated with her husband Nuno Bettencourt on the song "God Took a Picture", which appeared in the film Highlander III: The Sorcerer.

Although living in Boston with her husband and young daughter (apparently temporarily in her mother-in-law's basement at one point), she signed to Mushroom Records Australia and released 1999's Telelove, produced by Bettencourt, and the single "Satellite".

In June 2004 DeMarchi was recognised by the West Australian Music Industry Association and inducted as one of the inaugural inductees into the WAM Hall of Fame.