I don't know why people are acting so surprised by this. Christopher Lee has impeccable METAL credentials, including work with Rhapsody and Manowar. This isn't even the first metal song he's released as a solo artist.
I'd love love LOVE to see him take his Christmas album on tour with TSO.
How could you not this about him?! Hello? He was on, like, FIVE of Rhapsody's albums! They had whole tracks that were nothing but him talking about dragons and rainbow swords!