Foxx and will.i.am will premiere their collaboration 'Hot Wings (I Wanna Party)', taken from the upcoming animated movie Rio.
This will mark will.i.am's second appearance on the tenth season of American Idol. He performed with the Black Eyed Peas on the March 17 results show, which saw the band dedicating their new single 'Just Can't Get Enough' to people affected by the Japanese earthquake and tsunami on March 11.
Season three winner Fantasia will sing her new song 'Collard Greens & Cornbread', taken from her Back to Me album.
It has also been announced that next Wednesday's performance show will see the remaining finalists tackling tracks released during the 1980s.
This week's theme was classic Motown songs, and a compilation album and single tracks are now available to download on iTunes.
American Idol airs Wednesdays and Thursdays on Fox.
> Click here for a full recap of what happened in this week's results show