Adisson contributed vocals on the 1999 global hit "King of My Castle", a song by the Wamdue Project. "King of My Castle" peaked at the top of the BillboardDance Club Play chart in 1998. "King of My Castle" also topped the charts in the United Kingdom, and peaked within the top ten of the charts in several other countries, including Denmark, France, and Germany.
In 2004, Gaelle released her debut album, Transient through the label Naked Music. Her style is known for its smooth signature.