Bonnie McBride provided the voice for the Golden Egg in the video game version of Harry Potter and the Order of the Phoenix.
In the game, the player can find the Golden Egg hidden in the Prefect's bathroom. If the player fills the tub with water and uses Wingardium Leviosa to drop the Egg into the tub, it will sing the song for the Second Task from Harry Potter and the Goblet of Fire
In the game's credits, the part was credited as "Mermaid".