Guetta ,  Pitbull ,  Sebastian ,  Attitude ,  Keri Hilson ,  Dev ,  Lyrica Anderson ,  Justin Timberlake ,  Bruno Mars ,  Missy Elliott ,  Chris Brown ,  Rekapse , and  Demi Lovato . Timbaland is featured on the deluxe edition of Chris Brown's latest album,  F.A.M.E. , producing the song "Paper, Scissors,