Blizzard has unveiled the 19th tile of the World of Wacraft Battlecry Mosaic, which means there's just one tile left to go before the entire mosaic is unveiled. Only 788 photos are needed to complete the puzzle, so submit yours ASAP if you'd like to be a part of the project. (UPDATE: Blizzard is no longer accepting photo submissions.)

As always, the appearance of the tile has unlocked content on the mosaic page. This time it's the epic musical piece "Tournament Battle One" from Wrath of the Lich King! This is the second time Blizzard has released a song as part of the mosaic; the musical piece "Invincible" was released last month when the mosaic hit 50%.