http://www.hollenthon.com
If anyone isn't familiar with Hollenthon, and likes metal with an extremely heavy classical influence, check this band out. They're releasing their new album, "Opus Magnum," in May, and it's blowing away their last album. Normally there is a song or two that takes directly from some classical piece, and makes a metal version. This album takes one of my favorite classical pieces, Mussorgsky's "Pictures At An Exhibition," and expands on it in a metal way. If you're familiar with Pungent Stench, this is Martin Schirenc's band. They made a video for one of the tracks, "Son of Perdition.":
http://www.youtube.com/watch?v=yNi1oLlG2Hw
This track is the weakest on the album though... Regardless, they're a breathe of fresh air on the Napalm Records roster (along with Summoning and Falkenbach) from the typical female-fronted gothic metal/rock that Napalm is known for. Their other albums are "Domnus Mundi" and "With Vilest of Worms To Dwell," and they're spectacular as well if you're into metal with a lot of classical influences and references.