to the criticism that NPC behavior had been too simplistic in Morrowind, Bethesda developed the Radiant AI system for Oblivion. NPCs were designed to make choices, rather than complete scripted routines, to achieve predetermined goals. The manner in which goals such as eating, sleeping, reading, and speaking to others are fulfilled is dependent upon the environment, the choices of other NPCs, and programmed personality values. For example, an NPC whose goal is to find food may eventually resort to stealing from others, if they are given the opportunity and if it is in their character. These development mechanics allowed Bethesda to create NPCs who could engage in complex activities. Audio Oblivion features the voices of Patrick Stewart, Lynda Carter, Sean Bean, Terence Stamp, with celebrity acquisition and voice production being handled by Blindlight. The voice acting received mixed reviews in the gaming press. While many publications praised it as excellent, others found fault with its repetitiveness. The issue has been blamed on the small number of voice actors and the blandness of the dialogue itself. Lead designer Ken Rolston found the plan to fully voice the game "less flexible, less apt for user projection of his own tone, more constrained for branching, and more trouble for production and disk real estate" than Morrowinds partially recorded dialogue. Rolston tempered his criticism with the suggestion that voice acting "can be a powerful expressive tool" and can contribute significantly to the charm and ambiance of the game. He stated, "I prefer Morrowinds partially recorded dialogue, for many reasons. But I'm told that voiced dialogue is what the kids want." Oblivions score was composed by series mainstay Jeremy Soule, a video game composer whose past scores had earned him a British Academy of Film and Television Arts (BAFTA) award in the "Game Music Category" and two nominations for an Academy of Interactive Arts & Sciences (AIAS) award for "Original Music Composition". The official soundtrack to Oblivion, featuring 26 tracks spanning 58 minutes, was released in March 2006, via Soule's digital distributor DirectSong. Soule had worked with Bethesda and Todd Howard during the creation of Morrowind, and, in a press release announcing his return for Oblivion, Soule repeated the words he had said during Morrowinds press release: "The stunning, epic quality of The Elder Scrolls series is particularly compatible with the grand, orchestral style of music I enjoy composing the most." As in his compositions