Of the latter, we have this new song from the German Metal/Symphonic Rock band Once. "Forlorn In The Dark" is the group's submission to the 2014 Musikhaus Thomann Christmas Contest, about which I know nothing but it seems to be a good way to track down more Christmas songs, so...cool.
I'm not sure if this song is heavy enough for most Metal fans, but it should appeal to fans of acts as diverse as Trans Siberian Orchestra and Celtic Woman. You can grab this on Bandcamp for the low, low price of whatever you want. But it might be nice if you dropped by Facebook and gave Once a "Like".