This item is sheer badassery, people will pay coins for it to use the guitar effect... it would support the server. Add it for Icecrown and Lordaeron.
It was introduced during the scourge invasion event, the WotLK release event really. Surprised I didn't already see it in the store. It has no real effect on game play other than it's cool as fffffff, if you make it expensive enough people wouldn't bother buying it as a weapon to level alts with because it would be replaced quickly.