If you bought any of the tracks from the Countdown to "Play On" on iTunes, you can use their Complete My Album feature to get the rest of the album at a discounted price. iTunes Complete My Album customers will also receive an email with a code via email by November 17, 2009, for the bonus track "O Holy Night" when you complete "Play On" by November 10. You'll be emailed by November 17 to the email address on your iTunes account. To ensure receipt, make sure apple.com is not blocked by your spam filter.