Remember that dude who mashed up Metallica and Megadeth to pretty solid results? Well this guy is back with another round of mashups. He put together two Metallica and Black Sabbath songs.
First up is Metallica's "Sad But True" and Black Sabbath's "Children of the Grave," which works okay:
This second one, of Metallica's "Fade to Black" and Sabbath's "After Forever" works much better, in my opinion:
You can see more of his mashups here.
