He co-produced Lauryn Hill's debut solo album, "The Miseducation of Lauryn Hill" (1998), and co-wrote and co-produced two tracks on Hilary Duff's 2007 album "Dignity".
He co-produced Lauryn Hill's debut solo album, "The Miseducation of Lauryn Hill" (1998). She also co-wrote song Pon de Replay for Rihanna, and co-wrote and co-produced two tracks on Hilary Duff's 2007 album "Dignity".