Incidentally, here's the basics of what I was thinking.
Before looking, see if you can guess what it is
[spoiler=Hint: It's a warforged]
Mic Sounders the 13thWarforged scout (greater titan bloodline) Bard 2/Monk 1/Tattoed monk 1/Disciple of metal 8/War chanter 5
Chameleon tattoo (System change!) - turn into a 4th-level astral construct
Combat ability: Battery, Hail and Kill
Euphonies: Fight Until We Die, Metal Magic
Cacophanies: Symphony of Destruction (bloodlines turn it up to 11), Some Kind of Monster
Skills: Autohypnosis (max ranks) - lets him memorise sounds
Feats: Endurance, Improved Grapple, Improved Unarmed Strike, Practiced Spellcaster (bard), Skill Focus (Perform [Heavy Metal]), Melodic Casting, Toughness
Equipment: Medium +1 Axe-keytar, 5ft Carpet of flying, Microphone of Pain (Pipes of pain), Pipes of Sounding
Disc P: Combine songs - Fight Until We Die/Inspire Courage/Metal Magic (any two)
Disc M: Countersong/Hold personDisc X: Symphony of DestructionDisc F: Some Kind of MonsterInstruments of Destruction lets you apply weapon-related abilites to instruments - this means
playing Gargantuan instruments as well as wielding Gargantuan weapons.
Mic Sounders was so METAL that they had to seal him into
a cute form to suppress his power, or he could
destroy the world. Even then, seepage from his immense METAL meant that this form was never annoying. He fights the Zonders - do not be fooled, despite reproducing through Zonder "Metal", they are most definitely enemies of METAL.[/spoiler]