Blizzard has officially hit the halfway point in its World of Warcraft Battlecry Mosaic, and the content that has been unlocked is a little more substantial than the usual pieces of concept art. The team has released a musical excerpt of a song from Fall of the Lich King called "Invincible."

"An ode to one who has fallen. Time and events have left it unclear whether the song refers to the former prince of Lordaeron or his beloved steed."

Blizzard still needs to receive 9,983 more pictures before it will reveal the entire mosaic, so be sure to submit your photo if you haven't done it yet.