Apple has launched a Back to School music sale in iTunes for U.S. customers dropping the price on a several popular albums to $6.99 (via iMore). The sale works alongside the iTunes "Complete My Album" feature, allowing already purchased tracks to count towards the price of the full album. Here's the full list of songs on sale: - Imagine Dragons - Night Visions - Justin Timberlake - The 20/20 Experience - Robin Thicke - Blurred Lines -