"Toxic" is a cover version of the pop smash hit written by Cathy Dennis, Christian Karlsson, Pontus Winnberg and Henrik Jonback. Expand your Karaoke Revolution Presents: American Idol Encore 2 library by purchasing this track. For music credits, visit the Karaoke Revolution section of www.konami.com. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.