Sony/ATV Signs Harrell By Lars Brandle, London (June 01 2007) – Sony/ATV Music Publishing in the United Kingdom has signed writer and producer Thaddis Harrell to a long-term, worldwide publishing deal. Atlanta-based Harrell (aka Kuk) is a member of the Red Zone Productions team, which wrote and produced the smash hit “Umbrella” by Rihanna feat. Jay-Z.