Rockwilder got his start working with Erick Sermon and Redman in the '90s, before stepping up and claiming hits for JAY Z, Busta Rhymes, and LL Cool J around the turn of the millennium. Originally known for crafting rugged hard-knock beats, a team up with Christina Aguilera allowed the Queens-raised producer to tap into his funky side as he stole the show on the Moulin Rouge! soundtrack.