Just finished the second issue of Murder Falcon, from Image. It's about a down on his luck guitarist who's given a new purpose in life when a being from another dimension tracks him down and drafts him into using his music to battle monsters that are infesting the world. This creature is named Murder Falcon - he's a big guy with a cybernetic arm and the head of a falcon. Imagine Riot's mascot except a bird instead of a seal:
The way it works is that Murder Falcon draws strength from heavy metal music, so he needs our hero to shred every time he goes into battle. Basically, it's a lot of excuses to do cool metal references and have monsters beat each other up. It's silly but somehow works, especially if you're a metalhead.
My only misgiving about it is that such a musical concept really cries out for a good movie adaptation so that the full impact of seeing Murder Falcon ride a mastodon into battle while Painkiller is screaming in the background can be felt.