12 Days of Gifts iTunes - Free
Here is the brief description from the iTunes page. I have nothing more to add. Enjoy.
From 26 December – 6 January, you can download a gift each day—songs, apps, books, movies, and more—with the 12 Days of Gifts app. Each day's gift will only be available for 24 hours, so download the free app to make sure you don’t miss out. Please note: Not all content is available in all countries.