LRoc (born James Elbert Phillips) is a staff songwriter and producer at Jermaine Dupri's So So Def Recordings. He has co-written and co-produced singles like Janet Jackson's "Call on Me", Monica's "Everytime Tha Beat Drop", Mariah Carey's "Get Your Number", Murphy Lee's "Wat Dat Hook Gonna Be", Usher's "Yeah!", LL Cool J's "Control Myself," and Nelly's "Grillz". He recently produced Teairra Mari's single "Sponsor".