In 2005, theisonews forum wrote:
On the Inon Zur (music composer for Baldur's Gate, Icewind Dale, etc.) website I saw this:
Inon has started composing the original score for a major RPG production which is the sequel to one of the interactive entertainment industry's best-selling and multi award-winning franchises.
I can only assume is Fallout 3.
Neverwinter Nights 2

http://www.mobygames.com/developer/sheet/view/developerId,31026/