Pretty spooking stuff. I give it a rating of Ten Monstrous Clowns out of Ten. :)
Blind Guardian is a German metal band that's been around since the mid-1980s, and they pretty much single-handedly gave rise to the German metal scene. They've often been imitated and lampooned, but never equaled. Of particular interest to readers of this blog might be that the lyrics for their songs, written mostly by front-man Hansi Kursch, are often inspired by fantasy and horror literature.
Their best albums over the years have been "Tales from the Twilight World" (1990), "The Forgotten Tales" (1996), "A Night at the Opera" (2002), and their most recent effort "At the Edge of Time" (2010). (The video featured above was originally produced to promote "The Forgotten Tales", an album that's half quirky cover tunes.