The Season 2 champion, whose albums haven't exactly topped the charts, will perform the "farewell song" used to play off contestants as they are eliminated from the top 12 this season. The song will be a cover of Kenny Loggins' "Celebrate Me Home," in a new version produced by Terry Lewis and Jimmy Jam.
"It's very soulful, very heartfelt," Lewis said. "Ruben is singing his pants off."
Season 5's farewell song, Daniel Powter's "Bad Day," went on to sell 1.9 million copies and was the top digital download of 2006.