Activision has released a free downloadable track for Guitar Hero Legends of Rock, which has been taken from the hit massively multiplayer online role-playing game, World of Warcraft.

Fans of WOW can download the thrash metal song “I am Murloc” which Blizzard say is the “tongue-in-cheek tribute to the beloved race of fish-people by it’s house band, Level 70 Elite Tauren Chieftain.

The song is available for download now from the Xbox live marketplace and the Playstation Store.

This latest track adds to the comprehensive list of song packs already released for Guitar Hero: Legends of Rock. Currently, you can download hits from the likes of Muse, Coldplay, Foo Fighter and No Doubt.

You can check out the full list of downloadable content at the official Guitar Hero website.