Who  produced and released 2004 American adventure which Don Loren Harper was given credit for  
Don L. Harper: Don Loren Harper is a Los Angeles-based film composer, songwriter, conductor, and arranger whose credits include films such as "The Guardian", "National Treasure", "Training Day", "Armageddon", "The Rock", "Twister", "Broken Arrow", "Assassins", and "Speed". National Treasure (film): National Treasure is a 2004 American adventure heist film produced and released by Walt Disney Pictures.
Walt Disney Pictures