The twenty-second question in our third annual Birthday Bash Giveaway trivia contest is inspired by one of the prizes being offered by Gentle Giant Ltd. For your chance to win tell us who composed four Halo soundtracks. Enter here with your answer and your complete name and mailing address before 12:00 PM (PST) February 21, 2010. Don't forget to read the rules to ensure your entries are eligible! Follow the top link to check out the contest rules and make sure to enter properly.