Sony/ATV Music Publishing has extended its relationship with writer/producer Thaddis "Kuk" Harrell to a new long-term worldwide exclusive publishing deal. Harrell has written or co-written songs for like Rihanna's "Umbrella," Beyonce's "Single Ladies" and the recently announced theme to the upcoming movie "Avatar," entitled "I See You," performed by Leona Lewis.

Harrell, who recently formed his own production company Sugawuga Music to develop new talent, is also a member of Redzone with Tricky Stewart and The Dream. Harrell's creative contact at Sony/ATV is Rak Sanghvi, MDr of Sony/ATV Music Publishing UK.